Casio FX-82TL User manual

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fic-85W
fic-270WPLUS
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fx-350TL
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User's Guide
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fic-85WA
fic-270WPLUS
fx-300W
fx-350TL
fic-911W
User's Guide
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•To Remove the cover
Grasp the top of the cover,, and slide the unit out from the
bottom.. ... . .I_
•To Replace the cover
Grasp the top of the* cover, and slide the unit in from the
bottom. 4*"*V'«"*•*••' *
*n*
Always slide the unit into the" cover With the unit's" display
endfirst-: Never slide the keyboard end'of the unit into the
cover, a:?€' »ai••.
CASIO ELECTRONICS CO., LTD.
Unit 6, 1000 North Circular Road,
-** **London NW2 7J0, U.K.* '
»e.» W
*To Remove the cover
Grasfc the top of the cqvertand siide the unit out from the
bottom.
•To Replace the cover •
Grasp trW top of tfVcbver, and slide trie unit in from the
bottom. *' *e*t
Always slide' the'unit into the"' cover with the unite display
.encr-first? Never slide the keyboardendJof the unit into the
COVer. *?€4•'*•! !• f... >.• .„, .;
?CASIO ELECTRONICS CO., LTD.
*Unit S/IOOu North Circular Road.
*Vf 'VT **London NW2 7J0, LUC* *!
Be sure to read the following safety precautions before
using this calculator. Keep this manual handy for later ref-
erence.
/t\ Caution
This symbol is used to indicate information that can
result in personal injury or material damage if ignored.
Batteries
•After removing the batteries from the calculator, put
-them in asafe place where there is no danger of
them getting into the hands of small children and
accidently swallowed.
•Keep batteries out of the reach of small children. If
accidently swallowed, consult with aphysician im-
mediately. *•••' i•
•Never charge batteries, try to take batteries apart, or
:allow batteries to become shorted. Never expose bat-
,teries to direct heat or dispose of them by incinera-
*tfon: *
•Misuse of batteries can cause them to leak acid that
can cause damage to nearby items and creates the
possibility of fire and personal injury.
•Always make sure that abattery's positive ©and
negative Gsides are facing correctly when you
load it into the calculator.
•Remove the batteries if you do not plan tojjse the
calculator for along time.
•Use only the type of catteries specified for this cal-
culator in this manual.
Disposing of the Calculator
•Never dispose of the calculator by burning it. Doing
so can cause certain components to suddenly burst,
creating the danger of fire and personal injury.
Be sure to read the following safety precaution* before
using this calculator. Keep this manual handy for later ref-
erence.. ••
/:. AcQgiitiorj. ^.
This symbol Is used to indicate information that can
result in personal injury or material damage if ignored.
Batteries
•After removing the batteries from the calculator, put
-them In asafe place where there is no danger of
them getting into the hands of small children and
accidently swallowed.
•Keep batteries- out of the reach of small children. If
accidently swallowed, consult with aphysician im-
mediately. *'•••' ...
•Never charge batteries, try to take batteries apart, or
:allow batteries to become shorted. Never expose bat-
,teries to direct heat or dispose of them by incinera-
'tton; -{
•Misuse of batteries can cause them to leak acid that
can cause damage to nearby items and creates the
possibility of fire and personal injury. ~
•Always make sure that abattery's positive ®and
negative 0. sides are facing correctly when you
load it into the calculator.
•Remove the batteries if you do not plan to use the
calculator for along time.
•Use only the type of batteries specified for this cal-
culator in this manual.
Disposing of the Calculator
•Never dispose of the calculator by burning it Doing
so can cause certain components to suddenly burst,
creating the danger of fire and personal injury.
•1*

•The displays and illustrations (such as key markings)
shown in this User's Guide are for illustrative pur-
poses only, and may differ somewhat from the actual
items they represent.
•The contents of. this manual are subject to change
.without notice.
•)n no event shall CASIO Computer Co., Ltd. be liable
to anyone for special, collateral, incidental, or con-
sequential damages in connection with or arising out
of the purchase or use of these materials. Moreover,
CASIO Computer Co., Ltd. shall not be liable for any
claim of any kind whatsoever against the use of these
materials, by any other party.
•The displays and illustrations (such as key markings)
>shown in this User's Guide are for illustrative pur-
poses only, and may differ somewhat from the actual
items they represent
•The contents ol this manual are subject to change
without notice.
•}n no event shall CASIO Computer Co., Ltd. be liable
•;• to anyone for special, collateral, incidental, or con-
sequential damages in connection with or arising out
of the purchase or use of these materials. Moreover,
CASIO Computer Co., Ltd. shall not be liable for any
"
.claim of any kind whatsoever against the use of these
materials by any other party.
•Be sure to press the Pbutton on the back of the cal-
culator (step ®on page 29 or 30) before using it for
the first time (fx-82TL/fx-83WA/fx-270W PLUS/fx-
350TL). '
•Be sure to press the G>s) key before using the calcu-
lator for the first time (fx-85W/fx-85WA/fx-300W/fx-
911W). -
•Even if the calculator is operating normally, replace
the battery at least once every three years for the
fx-83WA/fx-85W/fx-85WA/fx-270W PLUS/fx-300W/
fx-350TUfx-911W, or at least once every two years
forthefx-82TL.
Dead battery can leak, causing damage to and malfunc-
tion of the calculator. Never leave the dead battery in the
calculator.'
•The battery that comes with the calculator when you
purchase It is for testing only. It may not provide full
service life.
•Low battery power,can cause memory contents to
.become corrupted or lost completely. Always keep
written records of all important data.
I*2«
...driBflBSHHNR
•Be sure to press the Pbutton on the back of the cal-
culator (step ©on page 29 or 30) before using It for
the first time (fx-82TLrtx-83WA/fx-270W PLUS/fx-
350TL).
•Be sure to press the ED key before using the calcu-
lator for the first time (fx-85W/fx-85WA/fx-300W/fx-
911W). ';.
..• Even If the calculator is operating normally, replace
the battery at least once every three years for the
fx-teWA/fx-8SW/fx-85WA/fx-270W PLUS/fx-300W/
fx-350TL/fx-911W, or at least once every two years
for the fx-82TL. 1
Dead battery can leak, causing damage to and malfunc-
tion of the calculator. Never leave the dead battery in the
calculator.
•The battery that comes with the calculator when you
purchase it is for testing only. It may not provide full
service life. r.5.;w;v-,i.,..
•Low battery power, can cause memory contents to
.become- corrupted or lost completely. Always keep
written records of alfimportant data.
1»2»
•Avoid use and storage in areas subjected to tempera-
ture extremes.
Very low temperatures can cause slow display response,
total failure of the display, and shortening of battery life.
Also avoid leaving the calculator in direct sunlight, near
awindow, near aheater or anywhere else it might be-
come exposed to very high temperatures. Heat can cause
*•olscoidratfqnordeiari^ and
damage to internal circuitry.
•Avoid use and storage In areas subjected to large
amounts of humidity and dust
Take care never to leave the calculator where it might be
splashed by water or exposed to large amounts of hu-
midity or dust Such elements can damage internal cir-
cuitry.
•Never drop the calculator or otherwise subject it to
strong impact
•Never twist or bend the calculator.
Avoid carrying the calculator in the pocket of your trou-
sers or other tight-fitting clothing where it might be sub-
jected to twisting or bending.
•Never try to take the calculator apart
•Neverpress the keys ofthecalculatorwithaball-point
pen or other pointed object
•Use asoft, dry cloth to clean trie exterior of the unit
If the calculator becomes very dirty, wipe it off with a
cloth moistened in aweak solution of water and amild
neutral household detergent Wring out all excess mois-
ture before wiping the calculator. Never use thinner, ben-
zine or other volatile agents to clean the calculator. Do-
ing so can remove printed markings and damage the
case.
•Avoid use and storage in areas subjected to tempera-
ture extremes.
Very low temperatures can cause slow display response,
total failure of the display, and shortening of battery life.
Also avoid leaving the calculator in direct sunlight near
awindow, near aheater or anywhere else it might be-
.come exposed to very high temperatures. Heat can cause
discoloration or deformation of the calculator's case, and.
damage to internal circuitry,
•Avoid use and storage In areas subjected to large
amounts of humidity and dust
Take care never to leave the calculator where it might be
splashed by water or exposed to large amounts of hu-
midity or dust Such elements can damage internal cir-
.cuitry.
•Never drop the calculator or otherwise subject it to
strong Impact
•Never twist or bend the calculator.
Avoid carrying the calculator in the pocket of your trou-
sers or other tight-fitting clothing where it might be sub-
jected to twisting or bending.
•Never try to take the calculator apart
•Neverpress the keys ofthe calculator with aball-point
pen or other pointed object
•Use asoft, dry cloth to clean the exterior of the unit
If the calculator becomes very dirty, wipe it off with a
cloth moistened in aweak solution of water and amild
neutral household detergent Wringout all excess mois-
.ture before wiping the calculator. Never use thinner, ben-
zine or other volatile agents to clean the calculator. Do-
ing so can remove printed markings and damage the
case.

Safety Precautions ... 1
Handling Precautions 2
Two-line Display 5
Key Layout.... 6
Before Starting Calculations............................ 8
Modes 8
input Capacity 9
Making Corrections During Input 9
Replay Function .* 9
Error Locator 9
Exponential Display Formats 10
Answer Memory 10
Basic Calculations ......................................... 1
1
Memory Calculations .1
1
Independent Memory.... 11
Variables 11
Fraction Calculations .......—... .........12
Fraction Calculations 12
Decimal-to-Fraction Conversion 12
Fraction-to-Decimal Conversion 12
Percentage Calculations ................................13
Scientific Function Calculations ... ..—......14
Trigonometric/Inverse Trigonometric Functions .... 1
4
Hyperbolic/Inverse Hyperbolic Functions 15
Angle Unit Conversion —15
Common and Natural Logarithms/
Antitogarithrris ........1—15
Square Roots, Cube Roots, Roots, Squares,
Cubes, Reciprocals, Factorials,
Random Numbers arid li .. i.L 16
fix, sci, rnd :1
6
ENQ Calculations 17
Coordinate Conversion (Pol(jr,.y), Bee (r, 9j) ............ 18
.»4»
Safety Precautions .....
Handling Precautions.
Two-line Display....
Key Layout .......
1
.—.2
5
6
.....8
.s
input Capacity g
Making Corrections During Input 9
Replay Function .;. .9
Error Locator ............. 9
Exponential Display Formats 10
Answer Memory ..... .... .... 10
Before Starting Calculations..
Modes
Basic Calculations .....
Memory Calculations
independent Memory
.
Variables.....;
'..................a
Fraction Calculations ........
Fraction Calculations ,
DecirnaMo-Fraction Conversion
Fraction-to-Decimal Conversion
Percentage Calculations .........
Scientific Function Calculations
.
Trigonometric/lrrverse Trigonometric Functions..
Hyperbolic/Inverse Hyperbolic Functions
Angle Unit Conversion .
'
Common and Natural Logarithms/
Antitogarithrris
.
Square Roots, Cube Roots, Roots, Squares,
Cubes, Reciprocals, Factorials,
Random Numbers' arid k.... .. ...
FIX, SCI, RNb
ENQ Calculations .
11
,11
.11
,11
12
.12
.12
.12
.13
.14
.14
.15
.15
.15
.16
,16
,17
Coordinate tonyejston (PolCr,/), Bee (r, ffj) 18
•4«
Permutation..
Combination
.
Statistical Calculations —....
Standard Deviation (SD Mode)
Regression Calculations (REG Mode)
.
Formula Memory (fx-85W)
:
Basewi Calculations (fx-8bVv
)
...... 18
...... 18
19
19
20
.:...23
..... 45
Degrees, Minutes, Seconds Calculations .... 25
Technical Information .................. ............25
When you have aproblem. :.: 25
Error Messages* .26
Order of Operations 27
Stacks 27
Power Supply —«. .28
Input Ranges ..; ;i31
Specifications ••••••••••••••••••••«•••«••«•.•.••..•••••••••••• 33
Permutation ............ ..... ................ 1
8
Combination ...... 18
Statistical Calculations 19
Standard Deviation (SD Mode) 19
Regression Calculations (REG Mode) 20
Formula Memory (fx-85W) ....23
~Btase-#i <5a7cuiatJc^ )"....U..vV.M.:.y... &
Degrees, Minutes, Seconds Calculations^ 25
Technical information ................................... 25
When you have aproblem 25
Error Messages* ............. '. 26
Order of Operations .27
Stacks ..,. 27
Power Supply ....... ........... ............... .28
Input Ranges L....;... .. 31
Specifications 33
5x3+£Sin
I
You can simultaneously check the calculation
formula and its answer.
The first line displays the calculation formula; k.
The second line displays the answer.
5X3+2S in60
You can simultaneously check the calculation
formula and its answer.
The first line displays the calculation formula; 'k.
The second line displays the answer.
5•5'

<fx-82TL/fx-83WA/fx-270W PLUS/fx-350TL>
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•7*

Modes
Anolication Mode
Name Mode
.Indicator
Calculation Modes
Normal calculations COMP
Standard deviation '
;
calculations [SD ;iSD
Regression calculations REG REG
Base-/! calculations .
(fx-85W.only) »"; ;;
BASE-N b(binary) ;
'0(OCtal). '
d(decimal)
H(hexadecimal)
Angle Unit Modes
Degrees*1'DEG '
Radians RAD
Grads GRA
Display Modes
V
Exponential notation
(Canceling FIX and SCI
specification)
NORM1
NORM2
Number of decimal
place specification FIX Fix
Number of significant
digit specification !VSCI .Sci
!
Notel r
•Mode indicators appear in the lower part of the display,
except for the Base-/? indicators which appear in the ex-
ponent part of the display.
•You cannot set the angle unit or the display mode while
the calculator is in the BASE-N mode (fx-85W).
•The COMP, SD, and REG modes can be used in combi-
nation with the angle unit modes.
•Be sure to check the current calculation mode (SD, REG,
COMP) and angle unit mode (DEG, RAD, GRA) before
beginning acalculation.
Modes
Application Mode
Name Mode
.Indicator
Calculation Modes
Normal calculations COMP
Standard deviation" *
calculations '[.SD .hiSD
Regression calculations REG •REG
Base-n calculations .
(fx-85W.onry) **; ;;BASE-N b(binary} .
o(octal), x
d(decimal)
H(hexadecimal)
Angle Unit Modes
Degrees* %.••"*.* ••DEG •13
Radians. RAD
Grads GRA E
Display Modes ><• r
Exponential notation
(Canceling FIX and SCI
specification)
NORM1
NORM2
Number of decimal
place specification FIX
1
Fix
Number of significant
digit specification *;|
SCI .-• Get
Note! r
•Mode indicators appear in the lower part of the display,
except for the Base-w indicators which appear in the ex*
ponent part of the display.
•You cannot set the angle unit or the display mode while
the calculator Is in the BASE-N mode (fx-85W).
•The COMP, SD, and REG modes can be used in combi-
nation with the angle unit modes.
•Be sure to check the current calculation mode (SD, REG,
COMP) and angle unit mode (DEG, RAD, GRA) before
beginning acalculation.
Input Capacity
•The memory area used for calculation input can hold 79
"steps." Whenever you input the 73rd step of any calcu-
lation, the cursor changes from Vto ""to let you know
memory is running low. If you still need to input more,
you should divide your calculation into two or more parts.
Making Corrections During input
•Use (33 and CB to move the cursor to the location you
want
•Press GD to delete the number or function at the current
cursor position.
•Press @&to change to an insert cursor C].Inputting
something while the insert cursor is on the display in-
serts the input at the insert cursor position.
•Press (33, (B, S09,' or Breturns to the normal cur-
sor from this insert cursor.
Replay Function
•Pressing IB or GD recalls the last calculation you per-
formed. You can then make any changes you want in the
calculation and re-execute it.
•Pressing 6S does not clear Replay memory, so you can
recall the last calculation even after you press 03.
•Replay memory is cleared whenever you start anew
calculation, change to another mode, or turn off power.
Error Locator
•Pressing OB or (33 after an error occurs displays the
calculation with the cursor positioned at the location
where the error occurred.
input Capacity
•The memory area used for calculation input can hold 79
"steps." Whenever you input the 73rd step of any calcu-
lation, the cursor changes from "J* to to let you know
memory is running low. If you still need to input more,
you should divide your calculation into two or more parts.
Making Corrections During input
•Use S3 and GB to move the cursor to the location you
want
•Press (H) to delete the number or function at the current
cursor position.
•Press £9 Gs§ to change to an insert cursor C3 .Inputting
something while the insert cursor is on the display in-
serts the input at the insert cursor position.
•Press (33, CB, SGal),' or Breturns to the normal cur-
sor from the insert cursor.
Replay Function
•Pressing QB or S3 recalls the last calculation you per-
formed. You can then make any changes you want in the
calculation and re-execute it
•Pressing 03 does not clear Replay memory, so you can
recall the last calculation even after you press Q3.
•Replay memory is cleared whenever you start anew
calculation, change to another mode, or turn off power.
Error Locator
•Pressing QB or (33 after an error occurs displays the
calculation with the cursor positioned at the location
where the error occurred.
»9<

Exponential Display Formats
This calculator can display up to 10 digits. Larger values
are automatically displayed using exponential notation. In
the case of decimal values, you can select between two
formats that determine at what point exponential notation
is used. Press &S©©CD CD (or CD) to select
NORM 1or NORM 2(fx-85W). For other models, press
SSSSJ(I](orH]).
•NORM 1
With NORM 1,exponential notation is automatically used
for integer values with more than 10 digits and decimal
values with more than two decimal places.
•NORM 2
With NORM 2, exponential notation is automatically used
for integer values with more than 10digits and decimal
values with more than nine decimal places.
•All of the examples in this manual show calculation re-
sults using the NORM 1format.
Answer Memory
•Whenever you press Bafter inputting values or an ex-
pression, the calculated result is automatically stored in
Answer Memory. You can recall Answer Memory con-
tents by pressing &.
•Answer Memory can store up to 12digits for the mantissa
and two digits for the exponent.
•Answer Memory contents are not changed if the opera-
tion performed by any of the above key operations re-
sults in an error.
Exponential Display Formats
This calculator can display up to 10 digits. Larger values
are automatically displayed using exponential notation. In
the case of decimal values, you can select between two
formats that determine at what point exponential notation
is used. Press SBSBS3 CD (or CO) to select
NORM 1or NORM 2(fx-85W). For other models, press
-BSSQ]CD(or(I]).
•NORM 1
With NORM 1, exponential notation is automatically used
for integer values with more than 10 digits and decimal,
values with more than two decimal places.
•NORM 2
With NORM 2, exponential notation is automatically used
for integer values with more than 10 digits and'decimal
values with more than nine decimal places.
•All of the examples In this manual show calculation re-
sults using the NORM 1format
Answer Memory
•Whenever you press'Bafter inputting values or an ex-
pression, the calculated result is automatically stored in
Answer Memory. You can recall Answer Memory con-
tents by pressing E3.
•Answer Memory can store up to 12 digits for the mantissa
and two digits for the exponent
•Answer Memory contents are not changed if the opera-
tion performed by any of the above key operations re-
sults in an error.
»10« .•10»
Basic-Calculations
•Use the OOMP mode for basic calculations.
•Example 1:3x(5xl0^)
3QCD5®0 9d)B [1.5-"!
•ExamploS :5x(9+7)
5003907031 80.
•You can skip all CD operations before B.
Independent Memory \
•Values can be input directly into memory, added to
memory, or subtracted from memory. Independent
memory is convenient for calculating cumulative totals.
•Independent memory uses the same memory area as
variable M. •
'
•To clear independent memory (M), input GD HGD.
Example:
23 +9-32 23 O9IS) QD
53 O6(E)
53-6-47
-) 45x2-90
32.
(Total) -11 45 02BE3
(DOE)
90.
3D
Variables
•There are nine variables (A through F, M, Xand Y), which
can be used to store data, constants, results, and other
values.
»Use the following operation to delete data assigned to
all nine variables: &SB.
•Use the following operation to delete data assigned to a
particular variable: GD US .This operation deletes
the data assigned to variable A.
-BasjcCalculatto-ris^glgs^
•Use the OOMP mode for basic calculations.
•Example 1:3x(5x10^)
30CD5©0 9DDB I1.5*
•Example* 2.: 5x<9+7)
50GD907CDI 80.
•You can skip aH CD operations before B
.
rMemory Cal^
Independent Memory \,
•Values can be Input directly into memory, added to
memory, or subtracted from memory. Independent
memory Is convenient for calculating cumulative totals.
•Independent memory uses the same memory area as
variable M.
.•To clear independent memory (M), input QD S3) GD.
•Example:
23 +9-32
53-6-47
-) 45 X2-90
(Total) -11
23091KD
530 6(E)
45 02SB
32.
47.
90.
-11.
Variables
•There are nine variables (Athrough F, M, Xand Y), which
can be used to store data, constants, results, and other
values.
•Use the following operation to delete data assigned to
ail nine variables: s@B,
•Use the following operation to delete data assigned to a
particular variable: QD SI CD. This operation deletes
the data assigned to variable A.
••11«

•Example: 193.2 -s- 23 =8.4
.132*2 +28 =6.9
193.2 IH S3 B23 BI8.4
©CBB28B1-1 6.9
Example: 122.2 +23 »8.4
.193.2 +28 «6.9
193.2 BOD 823 B'
©CZ3B28B
8.4
6.9
Fraction Calculations f
•Use the COMP mode for fraction calculations.
•Values are automatically displayed in decimal format
whenever the total number of digits of afractional value
(integer +numerator +denominator +separator marks)
.exceeds 10.
24
•Example 1:—+1—
.".35
2@3Q 1(3)4(3) 5BI
•Example 2: -j- 4-1.6
2j7j15.
102S3 1.6 Bf2.1
•Fraction/decimal calculation results are always decimal.
Decimal-to-Fraction Conversion
3•
•Example: 2.75 -» 2—
42.75 BI
@© I
2.75
2j.3j 4.
11-»4. |
Fraction Calculations
»Use the COMP mode for fraction calculations. -•
Values are automatically displayed in decimal format
whenever the total number of digits of afractional value
(integer +numerator +denominator +separator marks)
exceeds 10.
Example 1:~-+ 1-|-
203D 1(3)4(3)51 2j7j15.
Example 2: -^-+1.6
.•[email protected] £2.1
Fraction/decimal calculation results are always decimal.
Decimal-to-Fraction Conversion
Example: 2.75 -» 22.75 B]2.75 I
(ZD I.2_i.aj4.
11j4. I
Fraction-to-Decimal Conversion
Example: 0.5 (Fraction «-»Decimal)
1(13 21
•12»"
Fraction-to-Decimal Conversion
Example: 0.5 (Fraction <-»Decimal)
.•12*'
1j2.
es[; 0.5 0.5
TO
•Use the COMP mode for percentage calculations.
•Example 1:To calculate 12% of 1500
1500 a12@® r180.
•Example 2:To calculate what percentage of 880 is 660
660B 880@C53 |75. |
•Example 3:To add 15% onto 2500
2500O 15&H3B I2875. I
•Example 4>To discount 3500 by 25%
3800 B25 S(SB F2625.
•Example 5: if 300 grams are added to atest sample
originally weighing 500 grams, what is the percentage
increase in weight?
300 +500 ,4„/<M .
-x 100 =» 160 (%)
500 300B500@C%) -160.
•Example 6: If temperature changes from 40°C to 46°C,
what percentage did it rise?
46-40
40 x100= 15(%)"
46VB40@dD I1-5.
•Use the COMP mode for percentage calculations.
•Example 1:To calculate 12% of 1500
1500 B12 SOB f18671
75.
•Example 2:To calculate what percentage of 880 is 660
660 B880© S3 Q
•Example 3:To add 15% onto 2500
2500B 15SGDB H2875. I
•Example 4; To discount 3500 by 25%
3500 B25SS3B f" 2625.
•Example 5: If 300 grams are added to atest sample
originally weighing 500 grams, what is the percentage
increase in weight?
300 +500-x 100 -160 (%)
500
300 B500 SCD I160.
•Example 6: If temperature changes from 40°C to 46°C,
.what percentage did it rise?
46-40
40 X100-15 (%)•
,..46B40SC3 I15.
13

•Use the COMP mode for scientific function calculations.
•it =3.14159265359 r-.
••id.' i
Trigonometric/Inverse Trigonometric
Functions
•Example 1:sin63°52'41"
fx-85W: ©©©CD
Other models;- ©©CD
®63 £3 52 £3 41 E3
1
•Example 2: cos (-j- rad)
•fx-85W: S&©CD
Other models: ©©S3
®CD©(I3B3CDB
f2 /r
——ss
24
fx-85W: ©©©GO
Other models: @©CD
0.897859012
*0
0.5
o
•Example 3: cos •rad
SE3CD1D202CDS
©O©GD B
0.785398163
o
0.25
•Example 4: tanM0.741
fx-85W: S©@CD
Other models: ©©CD
•B© 0.741 C36.53844577
n
•Use the COMP mode for scientific function calculations.
•«* 3.14159265359
ITrigonometric/Inverse Trigonometric
Functions
•Example 1:sin63*52'41'
fx-85W:©@©(T)
Other models;- ©@QD
®83 052 B41 SI
•Example 2: cos (-|- rad)
fx-85W: SS©CD
Other models: ©©CD
®CD©C1]B3CDB
V"2 K
•Example 3:cos*1—*—rad
fx-85W:@©©CD
Other models: @©CD
©©CDGD2H2CDB
@HB(DB
•Example 4: tan~t0.741
fx-85W:©S©(T)
.Other models: ©@CD
©S3 0.741
1
"Ef
0.897859012
0.5
0.785398163
0.25
36.53844577
•14* .»14»
Hyperbolic/Inverse Hyperbolic
Functions
•Example 1:sinh 3.6 ":
HS3.6Q |18.28545536"!
•Example 2:sinh"130 •
(5i ©ISrSu j4.0^4622224 j
Angle Unit Conversion
•Press ©©to display the following menu.
DRG
123
•Pressing CD, CD, or CD converts the displayed value to
the. corresponding angle unit
•Example :To convert 4.25 radians to degrees
fx-85W: @©©CD h»
Other models: ©@CD
A25BSCD(R)I 4.25«"
243.5070629
Hyperbolic/Inverse Hyperbolic
Functions
Example 1:sinh 3.6
S3 S3 3.6 BI18.28545536
Example 2: sinh'130
Angle Unit Conversion
Press ©Sto display the following
4.0a4622224Tl
'
DRG
123
'Pressing CD, CD, or GD converts the displayed value to
the. corresponding angle unit
Example :to convert 4.25 radians to degrees
fx-85W:©©aCH .. ra .
Other models: ©©CD ""
4.25©SI2J(R)1 4.25'
243.5070629
Common and Natural Logarithms/
Antiiogarithms
•Example 1:log 1.23 S3 1.231
•Example 2: In 90 (=logp90)
©901
0.089905111
4.49980967
•Example 3:
r
t0 ©(Z3 10 B\22026.46579 j
•Example 4: 10,s SS3 1.5 B|31.6227766"!
•Examples^ 2(S34B |16. |
Common and Natural Logarithms/
Antiiogarithms
•Example 1:log 1.23 (53 1.231
•Example 2: In 90 (»logr90)
S3 901
•Example 3: r10
•Example 4: 10"
»Example 5: 2*
SE310I
©ED 1.51
2(Z)4l
0.089905111
4.49980967 [
22026.46579 1
31.6227766 1
15« •15*

Square Roots, Cube Roots, Roots,
Squares, Cubes, Reciprocals,
Factorials, Random Numbers and k
•Example 1: /2+ f3x fE
>(ZD2Q(Z]30(Z}5l 5.287196909
•Example 2: V5+ 3/^27
(S5B(2©27l
•Example 3: Vl23 (=123*)
7SEl23l
•Example 4: 123+30*
123 C3 30 GDI
-1.290024053
1023.
•Example 5: 12312 gib r1728.
•Example 6: ±_1_
3"4
CD 3(Z) P4(Z) GJfg) BI12.
•Example 7: 8! 8©dD BI40320.
•Example 8: To generate arandom number between
0.000 and 0.999 @@B[ 0.664
Example (rasults dW«r ««ch tima)
»Example 9: 3tc 3@QD B|9.424777961 |
FIX, SCI, RND
•Example 1: 200*7x14=400
200B7B 14l 400.
•16«
Square Roots, Cube Roots, Roots,
Squares, Cubes, Reciprocals,
Factorials, Random Numbers arid k
•Example 1: /5+ V5x fS
02D03Q05I 5.287196909
•Example 2: 3/5+ *i =£f
IB 5P(B O27 B|-1 .290024053
•Example 3: 7/l23 (=123*)
7©(ZD 123 SI1.988647795*
•Example 4: 123+30*
123 a30 ca i.1023. I
•Example 5: 12s12 EM 1728.
•Example 6: ~1
3-4
CD3(2)0 4(S(T}CDI
•Example 7: 8! 8@@B| 40320.
Example 8; To g^nar&ie arandom humbet between
0.000 and 0.999 ©8B| 0.664
httm)
»Example 9: 3n 3©GDB |9.424777961"!
FIX, SCI, RND
•Example 1:200+7x14-400
200 B7Q 14 B
I
400.
•16«
(SpadfiM three decimal ptaces.)
fx-85W: SSSSHdl
Other models: SBSCD CD
(Calculation continues using 10 200 B7B
display digits) B14B
400.000
Fix
28.571
400.000
Terforming the* same oalLuii-;.u«, ubmy tlie specified
number of decimal places
2001 28.571 |
(IntamaJ rounding) ©s 28.571
B14B |399.994 |
•Press ©8B8S3 CD (fx-85W) to clear FIX speci-
fication. For other models, pressS8SCD CD.
•Example 2: 1*3, displaying result with two significant
digits (SCI 2)
fx-85W: B8SSCI]CD-
Other models: SSSCEdl
11 3.3"*1
Sd
•Press B8S8CD CD (fx-85W) to clear SCI speci-
.fication. For other models, press S88CD CD.
(Spadfias thfM decimal plans.)
fx-85W: 8888CD GD [
Other models: 888CD CD
(Calculation continues using 10 200 B7BI
display digits) 'I28.571
ai4i 400.000
^Feridrrnlng the^ same ealCuii^ui. .uswig the specified
number of dea'mai places
2001 28.571 |
(Internal rounding) 88
luBf
28.571 |
399.994
•Press 8888CD CD (fx-85W) to dear FIX speci-
fication. For other models, press 8S8CD CD.
•Example 2: 1+3, displaying result with two significant
digits (SCI 2)fx-85W:SSBB0DCD-
Other models: 888CD CD
3.3-01
Sd
•Press 8888EJ CD (fr-85W) to dear SCI sped-
.fication. For other models, press S8BCD CD.
ENG Calculations
Example 1: To convert 56,088 meters to Kilometers
56088 BdD I56.088 03
Example Z: To convert 0.08125 grams to milligrams
0.081 25 B8I81.25-03 !
ENG Calculations
•Example 1:To convert 56,088 meters to kilometers
56038 B856.088 03
Example Z: To convert 0.08125 grams to milligrams
0.08125B8! 81 .25-*
•17» •17»

Coordinate Conversion (Po\(x,y), Rec (r, 0))
•Calculation results are automatically assigned to vari-
ables Eand F.
•Example 1: To convert polar coordinates (r=2, 0=60°)
to rectangular coordinates (.r, y) (DEG mode)
©©2CD60CDI 1.
1.732050808
vSsDCE
•SsD CS, @CED swaps displayed value with value in
memory.
•Example 2: To convert rectangular coordinates (1 ,/3)
to polar coordinates (r, 0) (RAD mode)
®1CD 2D3QDI 2.
9&m\ 1.047197551 |
•©(XI, @CE swaps displayed value with value in
memory.
Permutation
•Example: To determine how many different 4-digit val-
ues can be produced using the numbers 1through 7
•Numbers cannot be duplicated within the same 4-digit
value (1 234 is allowed, but 1123 is not).
7@® 41 840.
Combination
Example: To determine how many different 4-member
groups can be organized in agroup of 10individuals
.10@4B
(fx-85W:S®) 210.
Coordinate Conversion (Pol(r, Rec (r, 6))
•Calculation results are automatically assigned to vari-
ables Eand F.
•Example 1: To convert polar coordinates (r«2, 0=60°)
to rectangular coordinates (.r, y) (DEG mode)
©©2GD60CDO 1.
1.732050808
y5a) CD
•&CD, (E) CE swaps displayed value with value in
memory.
•Example 2: To convert rectangular coordinates (1 ,fS)
to polar coordinates (r, 0) (RAD mode)
®1CD 03CDI
EE) CEM.0471 97551
•GeeD CD, ®CD swaps displayed value with value in
memory.
Permutation
•Example: To determine how many different 4-digit val-
ues can be produced using the numbers 1through 7
•Numbers cannot b6 duplicated within the same 4Jiyii
value (1 234 is allowed, but 11 23 is not)..
7©C '840.
Combination
Example: To determine how many different 4-member
*groups can be organized in agroup of 10 individuals
10@4B|
(fx-85W:@®) 210. I
•18»
MStandard Deviation (SD Mode)
•Press SaO(fx-85W) to enter the SD Mode for sta-
tistical calculations using standard deviation. For other
models, press @GO.
Data ihpuTalwayb siai ui wiu iera G£D 3*to dear statisti-
cal memory.
•Input data is used to calculate values for.
n, Zx, lx2,JP, On and a«-i which you can
recall using the key operations noted
nearby.
Zx2
(sa) CD Zx
@QD n
63 CD jp
@(£3 On
a«-i
•Example: To calculate a»-i, o», jp, n, Ir, and lx7for the
following data :55, 54, 51 ,55. 53, 53, 54, 52
Enter SD Mode
fx-85W:S@CD
Other models: @CD <•
SiB(Memory Clear)
55 dU 54(H) 51 US 55 GOD
5313(13 54(H) 52(12 52.
(Sampt* Standard Otviation 0«-i) @@l
(Population Standard Oration On) S3 ®I
1.407885953
1.316956719*
(Arithmetic Mean .?)
(NumbarofDataw)
(Sum of Value* Ir)
(Sum of SquarM of VakJM Lr2)
SCO Q[
(wg CD £
(22DGD [[
©CD r
58.375
8.
427.
22805.
Standard Deviation (SD Mode)
•Press SSOp (fr-85W) to enter the SD Mode for sta-
.tistical calculations using standard deviation. For other
models, press @S3.
>Data inpufalway^'s'iStfis *iiivE33 3'te stearsta&£
cal memory.
•Input data is used to calculate values for.
/1, Zx, Zx2,JP, On and 0V1 which you can
recall using the key operations noted
nearby.
(ssDQD I**
63 CD Zx
GsDQD n
@d) JP
@®On
@S 0>M
•Example: To calculate o«-i, a«, JP, n, Ir, and lx* for the
following data :55, 54, 51 ,55, 53, 53, 54, 52
Enter SD Mode
fx-85W:S@CD
Other models: SS3
S(H B(Memory Clear)
55 (jED 54 ID 51 S3 55 S3
53(13(13 54(2352 S3 52.
(Sample Standard Deviation 0«-i) @®I
(Population Standard Daviation On) S3 23 I
1.407885953
1.316956719
(Arithmetic Mean .T)
(Number of Data «)
(Sum of Values Ir)
(Sum ol Square* of Values Ir.*)
B-GDO [
(«g (23 [
SsDQD
53.375
8.
427.
22805.
19- >19<

Data Input Precautions
•(H) (SJ inputs the same data twice.
•You can also input multiple entries of the same data us-
ing BCD. To input the data 110ten times, for example,
press 110 BCD 1013.
•The above results can be obtained in any order, and not
necessarily that shown above.
•To delete data you have just input, press. SCsD.
Regression Calculations (REG Mode)
•Press BBCD (fx-85W) to enter the REG mode and
then select one of the following regression types. For
other models, press BGD.
CD: Linear regression
CD: Logarithmic regression
CD: Exponential regression
(BCD: Power regression
QE) CD: Inverse regression
GE GD: Quadratic regression
•Data input always starts with BdD Bto clear statisti-
cal memory.
•The values produced by aregression calculation depend
on the values input, and results can be recalled using
the key operations shown in the table below.
©CD Zx2BB
SID CD Zx bgd V
(mTJCD nB® J*.
(mi) qq Iv2sb
SE3CE3 Zy BCD Regression coefficient A
S3 CD Zxv BCD Regression coefficient B
GsDCE) I*3Regression coefficient C
GeDCD X**y ©CD Correlation coefficient r
GsD CD. £x* BCD
em Jt bcs
b®
.»20«
Data Input Precautions
•S3 S3 inputs the same data twice.
•Yqu^^°N** multiple entries of the same data us-
ing SCD/Tb input the data 110 ten times, for example,
press 110 SCO 10 S3.
•The above results can be obtained inany order, and not
necessarily that shown above. '
•To delete data you have just input press BGOD.
Regression Calculations (REG Mode) -
•Press SSS3 (fx-85W) to enter the REG mode and
then select one of the following .regression types. For
other models, press BGD. "'..*"
CD: Linear regression
GD: Logarithmic regression
CD: Exponential regression
(BCD: Power regression
GE3 CD? Inverse regression
(B CD: Quadratic regression
•Data input always starts with B(ED Bto dear statisti-
cal memory.
•The values produced by a regression calculation depend
on the values input, and results can be recalled using
•the kev onerations shown in tna taKiAk^w.
(ED CD
I
213 BS
(59 GD Zx bcd
BOD n'®®
BGD Zv2BB
BCD 2v bcd Regression coefficient A
BCD Zxy bcd Regression coefficient B
BGD Lx3sen Regression coefficient C
BCD Zx*y bcd Correlation coefficient r
Zx4BCD i
BSD bce
bb
•20*
•Linear Regression
The regression formula for linear regression is: v«A+Bx.
•Example: Atmospheric Pressure vs. Temperature
Perform linear regression to deter-
mine the regression formula terms
and correlation coefficient for the
dat^€ajt>:NeAt; lasa ther^.*,*
siori formula to estimate atmos-
pheric pressure at 18°C and tem-
perature at 1000 hPa.
Temperature Atmospheric
Pressure
10°C 1003 hPa
15°C .1005 hPa
2G-*G- -1 010 hrtT
25°C 1011 hPa
30°C 1014 hPa
Enter REG Mode (Linear Regression)
fx-85W:BBCDCD
Other models: SCD CD
@GEO B(Memory Clear)
10(ZJ1003(I3 15GD1005 S3
20CD 1010(13 25(Z]1011(13
30 GD 101 4S3 30.
(Regression Coefficient A)
(Regression Coefficient B)
(Correlation Coefficient r)
(Atmospheric Pressure at irq 18 @CD I
997.4
BI2B[
bcdbQ
BCDB I0.982607368
(Temperature at 1000 hPa) 1000 B23 [4.642857143
0.56 I
1007.48
•Quadratic Regression '
•The regression formula for quadratic regression is:
vaA +av+Gv*.
•Input data using the following key sequence.
<v-data> CD <v-data> 13
•Linear Regression
The regression formula for linear regression is: y*A-f Br.
•Example: Atmospheric Pressure vs. Temperature
Perform linearregression to deter-
mine the regression formula terms
and correlation coefficient for the
data nearby. Next, use the regres-
sion formula to "estimate atmos-
pheric pressure at 18°C and tem-
perature at 1000 hPa.
Temperature
10°C
^Pressure*0
1003 hPa
15*C 1005 hPa
20»G-
25*C
*1010 frPa .
1011 hPa
30°C 1014 hPa
Enter REG Mode (Linear Regression)
fx-85w: eSCD CD
Other models: BGD CD
S(ED B(Memory Clear)
10CD1003I13 15CD1005(I3
20GD 1010 S3 25(131011(13
3oG3iOH(I3 KG 30.
SQB
bcdsI
(Temparalureat lOOOhPa) 1000 BCD I4*642857143
997.4
(Regression Coefficient A)
(Regression Coefficient B)
(Coirelaiic« Coefficient) BCD B|0.98260736^1
0.56
(Atmospheric Pressure at 18*C) 18BCS |1007.48"
•Quadratic Regression
•The regression formula for quadratic regression is:
y»A+Ox +G«*.
'•input data using the following key sequence.
<r-data> CD <v-data> 13
•21 21

•Example:
Xi y>
29 1.6
50 23.5
74 38.0
103 '46.4
.118 48.0
Perform quadratic regression to der
termine the regression formula terms
and correlation coefficient for the data
nearby. Next, use the regression for-
mula to estimate the values for v(es-
timated value of v) for xi =16 and .r
(estimated value of .r) for>v =20.
Enter REG mode (Quadratic regression)
fx-85W: @eCD CB CD
Other models: @GO (BCD
£53 (ED B
29 CD 1.6 S3 50 CD 23.5(211
74 CD 38.0 S3103 CD 46.4 S3
118 CD 48.0 S3
(Regression Coefficient A)
(Regression Coefficient B)
(Regression Coefficient C)
(5-when.o'»18)
(.? iwhen .W «20)
(*,when rt-20)
118.
•35.59856934
1.495939413
©SB
BCD B
BCD BP6.71629667-H
16 BCD h13.38291 067 |
20 SCD I47.14556728 I
B(23 |175.5872105
Data Input Precautions
•S3 S3 inputs the same data twice.
•You can also input multiple entries of the same data us-
ing BCD. To input the data "20 and 30* five times, for
example, press 20 CD 30 ©CD 5S3.
•The above results can be obtained in any order, and not
necessarily that shown above.
•To delete data you have just input, press BGS).
«22»
•Example:
Xi yt
29 1.6
50 23.5
74 38.0
103 "46.4
118 48.0
Perform quadratic regression to der
termine the regression formula terms
and correlation coefficient for the data
nearby. Next, use the regression for-
mula to estimate the values for 5> (es-
timated vaiue of v) for xi *16and x
(estimated value of .r) for yi =20.
Enter REG mode (Quadratic regression)
fx-85W:SSCD GB CD
Other models: @CD QE) CD
@(ED El
29 CD 1.6 S3 50 CD 23.5 S3
74 CD 38.0S3103CD 46.4 S3
118 CD 48.0 S3
(Regression Coefficient A)
(Regression Coefficient B)
(Regression Coefficient C)
(t-wrien.o- 16)
(.f, when'tf-20)
(*,when.W«20)
118.
-35.59856934
1.495939413
BCDS
©CE B
BCD B|-6.71629667-"!
16 0CD 1-13.38291067 I
20 BCD |47.14556728 I
BCD I175.5872105 l
Data input Precautions
•S3 S3 inputs the same data twice.
•You can also input multiple entries of the same data us-
ing SCD. To input the data "20 and 30* five times, for
example, press 20 CD 30 BCD 5S3.
•The above results can be obtained in any order, and not
necessarily that shown above.
••To delete data you have just input, press BSD.
•Formula memory lets you input asingle formula in
memory, and then input values for the formula's variables
to calculate results.
•Memory can hold asingle formula, up to 79 steps long.
This function can be used in the COMP mode only.
actually stored in memory when
you press the ®key in the sequence below.
•Example: To save the following formula, recall it, and
then use it to calculate aresult Y=* X2+3X -12
Input the formula.
.@(T] @QE) @oQ3 a
3@dDOi2 Y»X»+3X-12.
0.
Store it in memory. &
Input avalue for its variable. 7B
x?
58.
x?
76.
Formula memory is cleared whenever you start anew
calculation, change to another mode, or turn off power.
»In addition to decimal values, calculations can J?e per-
formed using binary, octal and hexadecimal values.
You can specify the default number system to be ap-
plied to all input and displayed values, and the number
system for individual values you input.
You cannot use scientific functions in binary, octal, deci-
mal, and hexadecimal calculations. You cannot input val-
ues that include decimal part and an exponent.
If you input avalue that includes adecimal part, the unit
automatically cuts off the decimal part.
Negative binary, octal, and hexadecimal values are pro-
duced, by taking the two's complement. ]
•Formula memory lets you input asingle formula in
memory, and then input values for the formula's variables
to calculate results.
•Memory can hold asingle formula, up to 79 steps long.
This function can be used in the COMP mode only.
»yfcfte-ffiaf'Sh3 fovii&l&la acijally sic-red irYmemdry when""
.you press the Skey in the sequence below.
•Example: To save the following formula, recall it, and
then use it to calculate aresult Y*X2+3X -.1
2
Input the formula.
•. 63CD ©GD BS3 CD Q
3@(De9l2 Y«Xa*3X- 12.
0.
Store it in memory. ®
Input avalue for its variable. 7B 58.
x?
7.
76.
•Formula memory is cleared whenever you start anew
calculation, change to another mode, or turn off power.
Bas^/i paic^
>In addition to decimal values, calculations can be per-
formed using binary, octal and hexadecimal values.
»You can specify the default number system to be ap-
plied to all input and displayed values, and the number
system for individual values you input.
>You cannot use scientific functions in binary, octal; deci-
mal, and hexadecimal calculations. You cannot input val-
ues that include decimal part and an exponent
>If you input avalue that includes adecimal part, the unit
automatically cuts off the decimal part
Negative binary, octal, and hexadecimal values are pro-
duced by taking the two's complement .
..
23?

•You can use the following logical operators between
values in Base-/? calculations: and (logical product), or
(logical sum), xor (exclusive logical sum), xnor (exclu-
sive logical sum negation), Not (negation), and Neg
(minus).
•The following are the allowable ranges for each of. the
available number systems.
Binary 1000000000 Sjc£ 1111111111
0S.rS 0111111111
Octal 4000000000 S.v S7777777777
05xS3777777777
Decimal -2147483648 5.v 32147483647
Hexadecimal 80000000 3.r £FFFFFFFF
OSjtS 7FFFFFFF
•Example 1: To perform the following, calculation and
produce abinary result:
101112+110102
Binary mode ©S3 S3 |pb|
10111.D 11010,
110001. "|
•Example 2: To perform the following calculation and
produce an octal result
76548 +12,o
Octal mode ©GO (22) I
®@®(i](o) 7654, B
®®@(I](d)12J 0. °|
516. «|
•Example 3: To perform the following calculation ancf
produce ahexadecimal result:
120u of 11 01 a
Hexadecimal mode seas I
120i«G2SsDCD(or)
(SSS(!3(b)iioia|
•24 •
12d. "|
•You can use the following logical operators between
values in Base-* calculations: and (logical product), or
(logical sum), xor (exclusive logical sum), xnor (exclu-
sive logical sum negation), Not (negation), and Neg
(minus). a
•The following are the allowable ranges for each of the
available number systems.
"Binary 1000000000 SxS 1111111111
0S.r5 0111111111
Octal 4000000000 SjcsS 7777777777
^.OsSxjS 3777777777-
Decimal -2147483648 £.v 52147483647
Hexadecimal 80000000 S.r3 FFFFFFFF
OSjtS 7FFFFFFF
•Example !: To perform the following. calculation and
produce abinary result
101118+110102 _______
Binary mode @CD (_) |o~7]
10111. 11101oJ 0.
110001. >|
•Example 2: To perform the following calculation and
produce an octal result
7654a +12,o
Octal mode 9CD Ss) r~" ~"
(__} (__) d_] (3) 7CC48.
®®(__CD(d)12,0n0. o|
516.
•Example 3: To perform the following calculation and
produce ahexadecimal result
120,for1101a
Hexadecimal mode 9CD (jj5) JT
120i,l_S(_)(or)
(_£)i_i)@(l](b)iioiJ
12d.
•24*
-Degreesf Seconds^, ^
'
.^Ml^i^MP^j&^M^^ zz&tf&Wi sag;
•You can perform sexagesimal calculations using degrees
(hours), minutes, and seconds, and convert between
sexagesimal and decimal values.
•Exemplo 1: To-ccnvert the dscrna' vr V.c 2.253 to a
"•" sex'a*ges»»rnai vaiue ':"
2.258 OI2.258
2°15°28.8
•Example 2: To perform the following calculation:
12*34*56" x3.45
12 EE) 34 B56 OP3.45 |0.
43°24°31.2
Technical^ -J
When you have aproblem
If calculation results are not what you expect or if an error
occurs, perform the following steps.
1.9CD(COMPmode)-
2. fx-85W: SS9CD mcrn,^
Other.models:eam ^mode)
3
'oS (N0RM 1m0de)
4. Check the formula you are working with to confirm it is
correct
5. Enter the correct modes to perform the calculation and
try again.
<fx-82TL/fx-83WA/fx-270W PLUS/fx-350TL>
If the above steps do not correct your problem, press the
Pbutton (see page 29 or 30) on the back of the calculator
to reset it Pressing the Pbutton deletes all data stored
in calculator memory. Make sure you always keep writ-
ten copies of all important data.
•25 •.
Wg^JS^Minutes, Seconds^ i
•You can perform sexagesimal calculations using degrees
(hours), minutes, and seconds, and convert between
sexagesimal and decimal values.
•Example 1: To convert the decimal value 2.258 to a
*T*'sex"Sgei7maivaiud
2.258 BI2.258
em 2°15°28.8
Example 2: To perform the following calculation:
12°34*56" x3.45
12E3 34(E) 56E3Q 3.45 f
1143°24°31.2
When you have aproblem..
If calculation results are not what you expect or if an error
occurs, perform the following steps.
1. 9(13 (COMP mode) •
2. fx-85w:eaam' ,DEQmode)
Other models: Sail] <DfcGmod8) ....
3. k-85w: aaaacs cd „^\
Other models: a3aCD CD <N0RM 1mode)
4. Check the formula you are working with to confirm it is
correct
5. Enter the correct modes to perform the calculation and
try again.
<fx-82TL/fx-83WA/fx-270W PLUS/fx-350TL>
If the above steps do not correct your problem, press the
Pbutton (see page 29 or 30) on the back of the calculator
to reset it Pressing the Pbutton deletes all data stored
in calculator memory. Make sure you always keep writ-
ten copies of all important data.
•25« -

<fx-85W/fx-85WA/fx-300W/fx-911W>
If the above steps do not correct the problem, press the
©key. The calculator performs aself-check operation and
deletes all data stored in memory if any abnormality is
detected. Make sure you always keep written copies of all
important data.
Error Messages
The calculator is locked up while an error message is on
the display. Press E3 to clear the error, or press S3 or GB
to display the calculation and correct the problem. See
"Error Locator" on page 9for details.
Ma ERROR
•Cause
•Calculation result is outside the allowable calculation
range.
•Attempt to perform afunction calculation using avalue
that exceeds the allowable input range.
•Attempt to perform an illogical operation (division by
zero, etc.).
•Action
•Check your input values and make sure they are ail
within the allowable ranges. Pay special attention to
values in any memory areas you are using.
Stk ERROR •
•Cause
•Capacity of the numeric stack or operator stack is ex-
ceeded.
•Action
•Simplify the calculation. The numeric stack has 10
levels and the operator stack has 24 levels.
•Divide your calculation into two or more separate parts.
Syn ERROR
•Cause
•Attempt to perform an illegal mathematical operation.
•Action
•Press S3 or QE3 to display the calculation, with the
cursor located at the location of the error. Make nec-
essary corrections.
-•26»
<fx-85W/fx-85WA/fx.300W/fx-911W>
If the above steps do not correct the problem, press the
S3key. The calculator performs aself-check operation and
deletes all data stored in memory if any abnormality is
detected. Make sure you always keep written copies of all
important data.
Error Messages
The calculator is locked up while an error message is on
the display. Press GB to clear the error, or press S) or CE3
to display the calculation and correct the problem. See
"Error Locator" on page 9for details.
Ma ERROR
•Cause
••Calculation result is outside the allowable calculation
range.
•Attempt to perform afunction calculation using avalue
that exceeds the allowable input range.
•Attempt to perform an illogical operation (division by
zero, etc.).
•Action
•Check your input values and make sure they are all
within the allowable ranges. Pay special attention to
values in any memory areas you are using.
Stk ERROR •.
•Cause
•Capacity of the numeric stack or operator stack is ex-
ceeded.
•Action
•Simplify the calculation. The numeric stack has 10
levels and the operator stack has 24 levels.
•Divide yourcalculation into two or more separate parts.
Syn ERROR •
•Cause
•Attempt to perform an illegal mathematical operation.
•Action
•Press S3 or QB to display the calculation with the
cursor located at the location of the error. Make nec-
essary corrections.
••26*
Arg ERROR
•Cause
•Improper use of argument
•Action
•Press S3 or IB to display the location of the cause of
the error and make required corrections.
*wOcter of Operations
Calculations are performed in the following order of prec-
edence.
<3) Coordinate transformation: Pol (.v. y), Rec (r, 0j
(2> Type Afunctions:
With these functions, the value is entered and then the
function key is pressed.
A^.rV.ri, ••
(3) Powers and roots: xv
,xf
®ahtc
®Abbreviated multiplication format in front of ntmemory
name, or variable name: 2k, 5A, kA etc.
®Type Bfunctions:
With these functions, the function key is pressed and
then the value is entered.
V", V, log, In, 1Qr
,sin, cos, tan, star1
,cos"1 ,
tan"1
,sinh, cosh, tanh, sinh"1
,cosh'1,tanh"1
,(-)
®Abbreviated multiplication format in front of Type B
functions: 2f3, Alog2 etc.
(g) Permutation and combination: /?Pr, nCr
<§> X, +
®+.
-
*Operations of the same precedence are performed from
right to left. **lnV~1 20 -*«rr{ln(V~~ 120)}
Other operations are performed from left to right.
*Operations enclosed in parentheses are performed first.
Stacks
This calculator uses memory areas, called "stacks," to tem-
porarily store values (numeric stack) and commands (com-
mand stack) according to their precedence during calcu-
lations. The numeric stack has 10levels and the command
stack has 24 levels. Astack error (Stk ERROR) occurs
whenever you try to perform acalculation that is so com-
plex that the capacity of astack is exceeded.
Arg ERROR .
*Cause
•Improper use of argument
•Action
•Press S3 or (B to display the location of the cause of
the error and make required corrections.
;--v^Ortter-©f Opaw&iicfie—
Calculations are performed in the following order of prec-
edence.
<3) Coordinate transformation: Pol (.v. ;»). Rec (r, fl)
®Type Afunctions:
With these functions, the value is entered and then the
function key is pressed.
jrVr-Vrl,*"
®Powers and roots: x\ xf
®able
(S) Abbreviated multiplication format in front of K, memory
name, or variable name: 2k, 5A, tcA etc.
®Type Bfunctions:
With these functions, the function key is pressed and
.then the value is entered.
V*\ log, in, 10*. sin, cos, tan, sin*1
,cos-1 ,
tan"1
,sinh, cosh, tanh, sinh"1
,cosh"1,tanh"1 ,(-)
(2) Abbreviated multiplication format in front of Type B
functions: 2/3, Alog2 etc.
®Permutation and combination: nPr, nCr
.•+.- *
*Operations of the same precedence are performed from
right to left, **ln f120 <rr{In( V120)}
Other operations are performed from left to right
*Operations enclosed in parentheses are performed first
Stacks
.This calculator uses memory areas, called "stacks," to tem-
porarily store values (numeric stack) and commands (com-
mand stack) according to their precedence during calcu-
lations. The numeric stack has 10levels and the command
stack has 24 levels. Astack error (Stk ERROR) occurs
whenever you try to perform acalculation that is so com-
.
plex that the capacity of astack Is exceeded.
•27*

Power Supply
The type of battery you should use depends on the model
number of your calculator.
<fx-85W/fx-85WA/fx-300W/fx-91 1W>
The TWO WAY POWER system actually has two power
supplies: asolar cell and aG13 Type (LR44) button bat-
tery. Normally, calculators equipped with asolar ceil alone
can operate only when relatively bright light is present.
The TWO WAY POWER system, however, lets you con-
tinue to use the calculator as long as there is enough light
to read the display.
•Replacing the Battery
Either of the following symptoms indicates battery power
is low, and that the battery should be replaced.
•Display figures are dim and difficult to read in areas
where there is little light available.
•Nothing appears on the display when you press the
G»Qkey.
•To replace the battery
<D Remove the six screws that
hold the back cover in place
and then remove the back
cover.
®Remove the old battery.
@Wipe off the sides of new bat-
tery with adry, soft cloth. Load
it into the unit with the posi-
tive ©side facing up (so you
can see it).
<§) Replace the back cover and
secure it in place with the six
screws.
(5) Press GUto turn power on. Be
sure not to skip this step.
Screw Screw
•28«
Power Supply
The type of battery you should use depends on the model
number of your calculator.
<fx^5W/fx^5WA/fx-300W/fx-911W>
The TWO WAY POWER system actually has two power
supplies: asolar ceil and aG13 Type (LR44) button bat-
tery. Normally, calculators equipped with asolar cell alone
can operate only when relatively bright light is present
The TWO WAY POWER system, however, lets you con-
tinue to use the calculator as long as there is enough light
to read the display.
•Replacing the Battery
Either of the following symptoms indicates battery power
is low, and that the battery should be replaced.
•Display figures are dim and difficult to read in areas
where there is little light available.
•Nothing appears on the display when you press the
OS key.
•To replace the battery
<D Remove the six screws that
hold the back cover in place
and then remove the back
cover.
(2) Remove the old battery.
OWipe oft the sides ot new u<u-
tery with adry, soft cloth. Load
it into the unit with the posi-
tive @side facing up (so you
can see it).
@Replace the back cover and
secure it in place with the six
screws.
(5) Press G»D to turn power on. Be
sure not to skip this step.
Screw Screw
28«
Screw Screw
<fx-82TL>
This calculator is powered by single AA-size battery.
•Replacing the Battery
Dim figures on the display of the calculator indicate that
battery power is low. Continued use of the calculator
when the battery is low can result in improper operation.
.. .. Replace the battery aa..iw*yi as possible when display
figures becorne dim.
•To replace the battery
<£ Press £9 to turn power off.
®Remove the six. screws that
hold the back cover in
place and then remove the
.
back cover.
Q) Remove the old battery.
<g) Load anew battery into the
unit so it's positive ©and
negative ©sides are fac-
ing correctly.
(§) Replace the back cover
and secure it in place with
the six screws.
®Use athin, pointed object
to press the Pbutton. Be
sure not to skip this step.
Q) Press S3 to turn power on.
Pbutton
Screw Screw
<fx-82TL>
This calculator is powered by single AA-size battery.
•Replacing the Battery
Dim figures on the display of the calculator indicate that-
battery power is low. Continued use of the calculator
when the battery is low can result in improper operation.
Replace the battery as soon as possible when display
i# figiirds becOfrie dffrn.
•To replace the battery
0press @to turn power off.
(2) Removethe six screws that'
hold the back cover in
place and then remove the
.
back cover. .
®Remove the old battery.
®Load anew battery into the
unit so ifs positive 0and
negative 0sides are fac-
ing correctly.
®Replace the back cover,
and secure it in place with
the six screws.
®Use athin, pointed object
to press the Pbutton. Be
sure not to skip this step.
Q) Press SB to turn power on.
Pbutton
•29» •29«

Screw
<fx-83WA/fx-270W PLUS/fx-350TL>
This calculator is powered by single G13 Type (LR44) but-
ton battery.
•Replacing the Battery
Dim figures on the display of the calculator indicate that
battery power is low. Continued use of the calculator
when the battery is low can result in improper operation.
Replace the battery as soon as possible when display
figures become dim.
•To replace the battery
(J) Press (22) to turn power off.
®Remove the two screws that hold
the battery cover in place and
then remove the battery cover.
ORemove the old battery.
<$> Wipe off the side of new battery
with adry, soft cloth. Load it into
the unit with the positive ©side
facing up (so you can see it).
®Replace the battery cover and
secure it in place with the two
screws.
®Use athin, pointed object to
press the Pbutton. Be sure not
to skip this step.
(2) Press S3 to turn power on.
Pbutton
•Auto Power Off
Calculator power automatically turns off if you do not per-
form any operation for about six minutes. When this hap-
pens, press SB (fx-85W/fx-85WA/fx-300W/fx-911W-
GOD )to turn power back on.
Screw
<fx-83WA/fx-270W PLUS/fx-350TL>
This calculator is powered by single G13 Type (LR44) but
ton battery.
•Replacing the Battery
Dim figures on the display of the calculator indicate tfw
battery power is low. Continued use of the calculatoi
when the battery is low can result in improper operation.
Replace the battery as soon as possible when display
figures become dim.
•To replace the battery
CJ) Press GsD to turn power off.
<2> Remove the two screws that hold
the battery cover in place and
then remove the battery cover.
<3> Remove the old battery.
®Wipe off the side of new battery
with adry, soft cloth. Load it into
the unit with the positive ©side
facing up (so you can see it).
®Replace the battery cover and
secure it in place with the two
screws.
®Use athin, pointed object to
press the Pbutton. Be sure not
to skip this step.
(2) Press 09 to turn power on.
Pbutton
•Auto Power Off
Calculator power automatically turns off if you do not per-
form any operation for about six minutes. When this hap-
pens, press EES (fx-85W/fx-85WA/fx-300W/fx-911W-
GOD )to turn power back on.
•30* •3f>
Input Ranges Input Ranges
Internal digits: 12 Internal digits: 12
Accuracy: As arule, accuracy is ±1 at the 10th digit. Accuracy: As arule, accuracy is ±1 at the 10th digit
Functions Input Range Functions ... Input Range
siar DEG OS WS4.499999999X10" sirur OEG OS WS4.499999999X10'0
RAO 0SWS785398163.3 RAD OS \x\ £7853981 63.3
"£ra OS \x\ S4.499999999X1
Q
10 GRA OS \x\ S4.499999999X1
0
to
COSJC OEG OS WS4:500000008X1010 co&r DEG OS WS4.500000008X 1010
RAO OS M£785398164.9 RAD OS \x\ S785398164.9
GRA OS |x| S5.000000009X1010 GRA OSXS5.000000009X1010
taar DEG Same as siar, except when \x\m (2/H)x90. taar DEG Same as sinx, except when |.r|* (2/i-1)x90.
RAO Same.as siar, except when |jc|* (2/?-1)xjtf2. RAD Same as siiir, except when |jr|« (2h-1)xti/2.
GRA Same as sinjc, except when |a*|* (2/M)x100. ..GRA Same as slnx, except when (2//-1)x100.
sin-1*osM sr. --sirr1*0S|x|S1 '(
cos*1*cos-1*
tarr1*OS \x\ 39.999999999x10* tan-1jc OS \x\ S9.999999999X10"
sinhx OS WS230.2585092 sinfir 0Sj.r| S230.2585092
coslu coshjc
sinn-1*OS |.r| £4.999999999x10" sinh*1*0£ W£4.999999999X10*
cosh-\r cosh*1*
tanhx OS WS9.999999999X 10/' tanhx OS |*j S9.999999999X10*1
tanh*1*tanh-\r
log.x/ln.v 0< xlog.tflar 0<.r
10* -9.999999999X 10»S jr S99.99999999 10v-9.999999999x10"£ xS99.99999999
-9.999999999X10»S .r S230.2585092 ex-9.999999999X10»S xS230.2585092
n0S,r<1 x.10"» rt 0S.r<1 x.10100
U1<1x10* X2W<1X'1(F
Vx W<1x 10"°;j:#0 Vx W<1x10»;jr*0
<n |.v|<1x1010Q 'fx W<1x 10,fl6
xi OS x£69 (.v is an integer) .rl OS ,t S69 ix is an integer)
•31 ••31 •

Functions Input Range
nPr OS Tl S99 r2* n(n ri<s an intonari
1S{«!/(//-r)l} S9.999999999 x10"
nCr OS WS99. rS77 (it ris an interior^
Pol^v) W, Lv| S9.999999999X1049
(**+>*) S9.999999999X 10"
Rec(r,^ OS rS9.999999999X10"
8: Same as siru*, cosa*
o* n
o* »
\a\t.btc<1xW°°
QZb.c
|Ai<1xl0100
.
Decimal *-» Sexagesimal Conversions
0°0°0°S \x\ S999999°59°
a->0: -1 x1
0
100<;yiogr<1 00
a*=0:>->0 .t
a*<0: ymn, (nis an integer)
However. -1 x1
0
100 <viogW<100
*o
3'>0: x#0
-lxl0100<1/A*logv<100
v»0: a*>0 ^
.v<0: A*=2/i+1 —(n #0; /r is an integer)
However -1 x1
0
100 <Vx log|v|<1 00
ab
lc
Total of integer, numerator, and denominator
must be 10 digits or less (including division
marks}
SD
(REG)
W<1x10»
bl<ixio»
|«|<ixio100
,ro*», yen, a\ \>
A, B, r:/i#*0
AO-V^XJVl-l I71 #0, 1
Function*
wPr
*inout Range
OS nS99, rS/; (n, ris an intenpri
1S {^!/(/7-r)l} s9.999999999x10"
nCr US nS99, rS/? (//, ris an inteqer)
Polfov) I4 \y\ S9.999999999X1049
(a'+v*) S9.999999999X10W
Rec(r, 0) w« 1a*9.999999999X10"
0: Same as sirtr, cosa*
Of »
K^c*<1x10100
0Sb, c
|A'|<iXI0,0°
Decimal <-» Sexagesimal Conversions
0°0°0°S \x\ S999999°59°
A?r
a*>0: -1 x1
0
100<vlogA-<1 00
a-=»0:>->0
a-<o. y=n, 2j^j- (ti is an integer)
However: -1 X10100 <yloaLrl<loo
,v>0:a**0
-1xl0l00 <1/xlogv<i00
v=0:a*>0 1
'
y<0: A*=-2/i-M ~(,7%o; /? is an integer)
However -1 xio1"<V.rloa!vkl00
ab
lc
Total of integer, numerator, and denominator
must be 10 digits or iess (including division
marks).
SO
(REG)
|a*|<1x10m
y\< 1x10s0
«|<1x10100
X<Tn, y&n, A\ V
A, B, r:n%0
ra-n-i.^o'^i :/z#0,
1
*Erros are cumulative with such internal continuous cal-
culations as a-?, jrt, and V3F ,so accuracy may be
adversely affected.
*Erros are cumulative with such internal continuous cal-
culations as a* xr, xttand 'J! ,so accuracy may be
adversely affected. '
•32» •32«
Power Supply:
fx-82TL: Single AA-size battery (R6P (SUM-3))
fx-85W/fx-85WA/fx-300W/fx-911W:
Solar cell and asingle G1 3Type button bat-
tery (LR44)
fx-83WA/fx-270W PLUS/fx-350TL:
... —^ii,-g;tf<313'Type-uUtton battery. (LR44)
Battery Ufa:
fx-82TL: Approximately 17,000 hours continuous dis-
play of flashing cursor.
Approximately 2years when left with power
turned off.
fx-85W/fx-85WA/fx-300W/fx-911W:
Approximately 3years (1 hour use per day).
fx-83WA/fx-270W PLUS/fx-350TL:
Approximately 12,000 hours continuous dis-
play of flashing cursor:'--; $
Approximately 3years when left with power
turned off.
^^^S^^^^KSSSM
Power Supply:
fx-82TL: Single AA-size battery (R6P (SUM-3))
fx-85W/fx-85WA/fx-300W/fx-911W:
Solar ceil and asingle G13 Type button bat-
tery (LR44)
fx-83WA/fx-270W PLUS/fx-350TL:
Single Gi 3Type button aaitery (LR44)
'
Battery Life:
fx-82TL: Approximately 17,000 hours continuous dis-
play of flashing cursor.
Approximately 2years when left with power
turned off.
fx-85W/fx-85WA/fx-300W/fx-911 W:
Approximately 3years (1 hour use per day).
fx-83WA/fx-270W PLUS/fx-350TL:
Approximately 12,000 hours continuous dis-
play of flashing cursor:«"^
Approxfrhateiy 3years when left with power
turned off.
Dimensions:
fx-82TL: 19.3(H) X76(W)X164(D) mm
V4r{H)x3mQN)x6V^"{D)
fx-83WA/fx-85W/fx-85WA/fx-270W PLUS/fx-300W/
fx-350TL/fx-911W:
10(H)X76(W)X150(D) mm
3/8w(H)x3"(W)x5W(D)
Weight: ,
fx-82TL: 115g (4.1 oz) including battery
fx-85W/fx-85WA/fx-300W/fx-911W:
80g(2.8 oz) including battery
fx-83WA/fx-270W PLUS/fx-350TL:
90 g(3.2 oz) including battery
Power Consumption: 0.0001 W
Operating Temperature; 0°C -40°C (32°F -104°F)
Dimensions:
fx-82TL: 19.3(H)X76(W)X164(D) mm
y4"(H)x3"{WjX6V^'t{D)
fx*3WA/fx-85W/fx-85WA/fx-270W PLUS/fx-300W/
fx-350TL/fx-911W:
10(H)X76(W)X1 50(D) mm
3/8"(H)X3"(W)X57/8"(D)
Weight:
fx-82TL: 115g (4.1 oz) including. battery
fx-85W/fx-85WA/fx-300W/fx-911 W:
80g(2.8 oz) including battery
fx-83WA/fx-270W PLUS/fx-350TL:
90 g(3.2 oz) including battery
Power Consumption: 0.0001
W
Operating Temperature: 0°C -40°C (32*F -104°F)
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