Casio fx-260SOLAR II User manual

• Example 5: 1
2↔0.5 (Fraction ↔Decimal)
1 C2 =12.
C0.5
C12.
• Example 6: 1↔
1 C2 C3 12 3.
AB5 3.
AB12 3.
Percentage Calculations
• Use COMP mode for percentage calculations.
• Example 1: To calculate 12% of 1500.
1500 -12 Av180.
• Example 2: To calculate what percentage of 880 is 660.
660 \880 Av75.
• Example 3: To add 15% onto 2500.
2500 -15 Av+2875.
• Example 4: To discount 3500 by 25%.
3500 -25 Av,2625.
• Example 5: To calculate the following using a constant.
12% of 1200 = 144
18% of 1200 = 216
23% of 1200 = 276
(12 %) 1200 --12 AvK 144.
(18 %) 18 AvK 216.
(23 %) 23 AvK 276.
• Example 6: 300 grams are added to a test sample
originally weighing 500 grams, producing a final test
sample of 800 grams. What percent of 500 grams is 800
grams?
300 +500 Av160.
• Example 7: What is the percentage change when a value
is increased from 40 to 46?
46 ,40 Av15.
Scientific Function Calculations
• Use COMP mode for scientific function calculations.
• Some calculations may take a long time to complete.
• Wait for result before starting next calculation.
• π= 3.1415926536.
kSexagesimal Functions
• Example 1: 14°25’36” + 12°23’34” = 26°49’10”
14 I25 I36 I+
12 I23 I34 I=26°49°10.
• Example 2: 1°2’3” + 4.56 = 5.594166667
1 I2 I3 I+4.56 =5.594166667
• Example 3: sin 87°65’43.21” = 0.999447513 (DEG mode)
87 I65 I43.21 IS0.999447513
• Example 4: 1.23 ↔1°13’48” 1.23 I1°13°48.
I1.23
I1°13°48.
• Example 5: 12°34’ ↔12.56666667
12 I34 IAO12.56666667
You can also use Iwhen inputting values to convert
between sexagesimal and decimal.
k Trigonometric/Inverse Trigonometric Functions
• Example 1: sin ( π
6rad) (RAD mode)
Ax\6 =SRAD
0.5
• Example 2: cos 63°52’41” (DEG mode)
63 I52 I41 IWDEG
0.440283084
• Example 3: tan (35gra)(GRA mode)
35 EhGRA
–0.612800788
• Example 4: cos–1 ( 2
2 rad) (RAD mode)
2 AL\2 =AVRAD
0.785398163
• Example 5: To convert 45 degrees to radians, grads, and
back to degrees
F445 DEG
45.
AF5RAD
0.785398163
AF6GRA
50.
AF4DEG
45.
Repeated conversion between angle units can cause
normally minute error to accumulate, resulting in poor
precision.
kHyperbolic/Inverse Hyperbolic Functions
• Example 1: sinh 3.6 3.6 MS18.28545536
• Example 2: sinh1 30 30 MAj4.094622224
2
3
5
3
fx-82SOLAR II
fx-260SOLAR II
fx-260SOLAR II NF
Basic Calculations
• Use the COMP mode for basic calculations.
• Example 1: 234.553
23 +4.5 ,53 =–25.5
• Example 2: 56(12)(2.5)
56 -12 E\2.5 E=268.8
• Example 3: 23(11020)
2 \3 -1 e20 =6.66666666719
• Example 4: 7845 = 36
7 -8 ,4 -5 =36.
• Example 5: = 0.3
4 -5 \6 AN=0.3
• Example 6: 2[76(54)]  122
2 -O7 +6 -
O5 +4 PP=122.
• You can skip all Poperations before the =key.
• Example 7: 4
3π53
4 \3 -Ax-5 AN=523.5987756
Constant Calculations
• Press +, ,, -,or \twice after inputting a number to
make that number a constant.
• “K” is on the display while a constant is being used.
• Use the COMP mode for constant calculations.
• Example 1: 2.33, then 2.36
(2.33) 2.3 ++3 =K5.3
(2.36) 6 =K8.3
• Example 2: 122.3, then 12(9)
(122.3) 12 --2.3 =K27.6
(12(9)) 9 E=K–108.
• Example 3: 17171717  68
(1717) 17 ++=K34.
(171717) =K51.
(17171717) =K68.
• Example 4: 1.74  8.3521
(1.72)1.7 --=K2.89
(1.73)=K4.913
(1.74)=K8.3521
Memory Calculations
• Use the COMP mode for memory calculations.
• Use AY, |, A{ and Zfor memory calculations.
AY replaces current memory contents.
• “M” appears when there is a value in memory.
• To clear memory, press 0AY or tAY.
• Example 1: (536)(238)(562)(994)  210.75
(536) 53 +6 =AYM59.
(238) 23 ,8 |M15.
(562) 56 -2 |M112.
(994) 99 \4 |M24.75
(Memory recall) ZM210.75
• Example 2: To calculate the following using memory as
shown.
M13.
• Example 3: To calculate the following using memory and
a constant: (123)(453)(783)135.
(123) 3 --12 =AYMK 36.
(453) 45 A{MK 135.
(783) 78 |MK 234.
(Memory recall) ZMK 135.
Fraction Calculations
(fx-82SOLAR II/fx-260SOLAR II only)
• Use COMP mode for fraction calculations.
• Total number of digits (including division marks) cannot
exceed 10.
• Example 1:   1
2 C3 +4 C5 =1 7 15.
• Example 2: 3 1  4
3 C1 C4 +
1 C2 C3 =4 11 12.
• Example 3: 2 C4 24.
=12.
• Example 4: 1.6  2.1
1 C2 +1.6 =2.1
Fraction/decimal calculation result is always decimal.
6
45
2
3
4
5
7
15
1
4
2
3
11
12
2
4
1
2
1
2
Handling Precautions
• Be sure to press the 5key before using the calculator.
• Your calculator is made up of precision components.
Never try to take it apart.
• Avoid dropping your calculator and otherwise subjecting it
to strong impact.
• Do not store the calculator or leave it in areas exposed to
high temperature or humidity, or large amounts of dust.
When exposed to low temperatures, the calculator may
require more time to display results and may even fail to
operate. Correct operation will resume once the calculator
is brought back to normal temperature.
• The display will go blank and keys will not operate during
calculations. When you are operating the keyboard, be
sure to watch the display to make sure that all your key
operations are being performed correctly.
• With certain calculations, it may take some time before the
result is displayed. The display is blank while a calculation
is in progress.
• Avoid using volatile liquids such as thinner or benzine to
clean the unit. Wipe it with a soft cloth, or with a cloth
that has been dipped in a solution of water and a neutral
detergent and wring out.
• In no event will the manufacturer and its suppliers be liable
to you or any other person for any damages, expenses,
lost profits, lost savings, or any other damages arising
out of malfunction, repairs, or insufficient light. The user
should prepare physical records of data to protect against
such data loss.
• Never dispose of the liquid crystal panel, or other
components by burning them.
• Before assuming malfunction of the unit, be sure to
carefully reread this manual and ensure that the problem
is not due to operational error.
• The contents of this manual are subject to change without
notice.
• No part of this manual may be reproduced in any form
without the express written consent of the manufacturer.
• Be sure to keep all user documentation handy for future
reference.
Modes
Application Key
Operation
Mode
Name*
Standard deviation calculations Fl SD
Normal calculations F0 COMP
Calculations using degrees F4 DEG
Calculations using radians F5 RAD
Calculations using grads F6 GRA
Number of decimal place
specification F7 FIX
Number of significant digit
specification F8 SCI
Cancels FIX and SCI settings F9 NORM
* Display indicators show current mode setting. Absence of
display indicator indicates COMP Mode.
• The above table is printed on the back of the calculator.
Note!
• A mode guide is located at the top of the display screen.
• DEG, RAD, and GRA modes can be used in combination
with COMP and SD modes.
• F9 does not exit SD mode.
• F0 exits SD mode.
• F0 does not clear SCI or FIX specifications.
• Always press tbefore entering DEG, RAD, and GRA
modes.
• Remember to always set the operating mode and angular
unit (DEG, RAD, GRA) before starting your calculation.
User’s Guide
RJA536287-001V02
EN
SA1612-B Printed in China
© 2017 CASIO COMPUTER CO., LTD.
kCommon and Natural Logarithms, Exponents
• Example 1: log 1.23 1.23 R0.089905111
• Example 2: In 90 (loge90) 90 T4.49980967
• Example 3: Iog 64
Iog 4
64 R\4 R=3.
• Example 4: 100.4 5 e3
.4 AQ+
5 -3 EAU=2.760821773
• Example 5: 232 w3 =8.
• Example 6: 232 w3 E=0.125
• Example 7: e10 10 AU22026.46579
• Example 8: log sin 40°+ log cos 35° (DEG mode)
40 SR+35 WR=DEG
–0.278567983
To convert to antilogarithm: AQDEG
0.526540784
• Example 9: 81/3 8 As3 =2.
kSquare Roots, Cube Roots, Squares,
Reciprocals and Factorials
• Example 1: 2 3 5
2 AL+3 AL-5 AL=5.287196909
• Example 2: 35  3 27
5 AD+27 EAD=–1.290024053
• Example 3: (30)230 EK900.
• Example 4: 1 1
3 4
1
3 AX,4 AX=
AX12.
• Example 5: 8! 8 Af40320.
kFIX, SCI, NORM, RND, RAN#, ENG Calculations
• Example 1: 1.2341.234, rounding result to two places
(FIX 2).
F72FIX
0.00
1.234 +1.234 =FIX
2.47
• Example 2: 1.2341.234, rounding input to two places.
F721.234 Ab+
1.234 Ab=FIX
2.46
• Press F9to clear FIX specification.
• Example 3: 13, displaying result with two significant
digits (SCI 2).
F82SCI
0.0 00
1 \3 =SCI
3.3–01
• Press F9to clear SCI specification.
• Example 4: To convert 56,088 meters to kilometers.
56088 AJ56.088 03
• Example 5: To convert 0.08125 grams to milligrams.
.08125 AJ81.25–03
• Example 6: To generate a random number between
0.000 and 0.999.
Example (results differ each time) Ac0.664
kCoordinate Conversion
• Example 1: To convert polar coordinates (r2,  60°) to
rectangular coordinates (x, y). (DEG mode)
x2 Az60 =DEG
1.
yANDEG
1.732050808
ANswaps displayed value with value in memory.
• Example 2: To convert rectangular coordinates (1, 3 ) to
polar coordinates (r,
 ). (RAD mode)
r1 Ay3 AL=RAD
2.
θ
ANRAD
1.047197551
kPermutation
• Example: To determine how many different 4-digit values
can be produced using the numbers 1 through 7.
7 Am4 =840.
kCombination
• Example: To determine how many different 4-member
groups can be organized in a group of 10 individuals.
10 An4 =210.
CASIO Worldwide Education Website
http://edu.casio.com
Manuals are available in multi languages at
http://world.casio.com/manual/calc
fx-82SOLAR ,,
fx-260SOLAR ,,
fx-260SOLAR ,, NF
EN
fx-82SOLAR260SOLARIINFEN161212.indd1fx-82SOLAR260SOLARIINFEN161212.indd1 16/12/1210:5116/12/1210:51

Statistical Calculations (SD Mode)
• Press Flto enter the SD Mode for statistical
calculations using standard deviation.
• If FIX or SCI is on the display, press F9first.
• Data input always starts with Au.
• Example: To calculate n1,n, o,n,x, and x2for the
following data: 55, 54, 51, 55, 53, 53, 54, 52
Enter SD Mode. FlSD
0.
Input Data. Au55 }
54 }51 }
55 }53 }}
54 }52 }SD
52.
Sample standard deviatio n
AqSD
1.407885953
Population standard deviation ApSD
1.316956719
Arithmetic mean A`SD
53.375
Number of data ArSD
8.
Sum of values AoSD
427.
Sum of squares of values AaSD
22805.
• }}inputs the same data twice (as above).
• You can also input multiple entries of the same data using
-. To input the data 110 ten times, for example, press 110
-10 }.
• The above results can be obtained in any order, and not
necessarily that shown above.
• To delete data you have just input, press A[.
kMaking Corrections During Data Input
• Example 1: To change data you have just input.
Correct Actual Correction
51 }50 }A
[
51 }
130 -
31 }
120 -t 130 -
31 }
130 -
31 }
120 -
31
t130 -
31 }
• Example 2: To change data you previously input.
Correct Actual Correction
51 }49 }49 A[
51 }
130 -
31 }
120 -
30 }
120 -30 A[130 -
31 }
Technical Information
kKeys and Their Functions
• General
All clear ................................................ t
Arithmetic calculations......................... +, ,, -,
.............. \, =
Backspace ........................................... Q
Clear (retains memory) ........................ k
Number input ....................................... 0– 9, l
Power on; All reset ............................... 5
Sign change ......................................... E
• Memory
Memory in ............................................ AY
Memory minus ..................................... A{
Memory plus ........................................ |
Memory recall ...................................... Z
• Special
Display/memory swap ......................... AN, Ad
Exponent .............................................. e
Internal rounding .................................. Ab
Parentheses ......................................... O, P
Pi (3.1415926536) ................................ Ax
Select mode ......................................... F
Sexagesimal ........................................ I, AO
Shifts key functions.............................. A
• Scientific Functions
Arc cosine ............................................ AV
Arc sine ................................................ Aj
Arc tangent........................................... Ag
Common antilogarithm ........................ AQ
Common logarithm .............................. R
Convert to degrees .............................. AF4
Convert to grads .................................. AF6
Convert to radians................................ AF5
Cosine .................................................. W
Cube..................................................... AN
Cube root ............................................. AD
Engineering .......................................... AJ, AP
Factorial ............................................... Af
Fraction* ............................................... C
Fraction* ............................................... AB
Hyperbolic ............................................ M
Natural antilogarithm ........................... AU
Natural logarithm ................................. T
Percent ................................................. Av
Polar-to-rectangular ............................. Az
Power ................................................... w
Random number .................................. Ac
Reciprocal ............................................ AX
Rectangular-to-polar ............................ Ay
• Example: The following operation uses 4 levels and 5
nested parentheses.
2
-OOO3 +4 -OO5 +4
The table below shows register contents following the
above input.
Register Contents
x4
L1(( 5 
L24 
L3((( 3 
L42 
L5
L6
kFormulas and Ranges
The following are the formulas and ranges that are applied
to various calculations that can be performed using this
calculator.
Coordinate Transformation
• With polar coordinates,
θ can be calculated within a range
of –180° 
θ  180°. The calculation range is the same for
radians and grads.
\
<
;
3[\
[
U
<
3RO
5HF
;
θ
θ
3U
Permutation
• Input range: n r 0 (n, r: integers)
• Formula: nPr
Combination
• Input range: n r 0 (n,r: integers)
• Formula:
nCr
Population Standard Deviation
Q Q

L 1
Q([L– [)2
Q
[2 – ([)2 / Q
Sample Standard Deviation
Q– 1 Q– 1

L 1
Q([L– [)2
[2 – ([)2 / Q
Q– 1
Arithmetic Mean
oQ

L 1
Q[L[
Q
Input Ranges
Functions Input Range
sinx
cosx
tanx
(DEG) x9109
(RAD) x5107πrad
(GRA) x11010 grad
However, for tan x:
x≠90(2n1):DEG
x≠π2·(2n1):RAD
x≠100(2n1):GRA
sin–1x
cos–1xx 1
tan–1xx 1 
10100
sinhx
coshxx 230.2585092
tanhxx 1
10100
sinh–1xx 5  1099
cosh–1x1 x 5  1099
tanh–1xx 1
logx/lnx1
10–99
 x 1 
10100
10x–1 10100
 x
100
ex–1
10100
 x 230.2585092
[0 x 1 
10100
x2x 1
1050
x3x 2.154434690 
10
33
1/xx 1 10100 ;
x≠
0
[
3x 1
10100
x!0
 x
69 (
xis an integer)
nPr/nCr
0 rn
n11010
(nand rare integers)
R→P
x2  y2110100
P→R
0 r 110100
(DEG) 

9109
(RAD) 

5107πrad
(GRA) 

11010 grad
°’ ”
Input and Results:
Total of hour, minutes, and seconds digits
must be 10 or fewer (including separator
symbols)
Decimal ↔ Sexagesimal Conversions
x 2777777.777
xy
x0: –110100ylogx100
x0: y0
x0: yn;1
2n1(nis an integer)
However: –110100 ylogx100
x1/y
x0: y≠0
–1101001/ylogx100
x0: y0
x0: y2n1; 1
m(m≠0; mand nare integers)
However: –110100 1/ylogx100
a b/c*
Total of integer, numerator, and denominator
must be 10 digits or less(including division
marks).
n!
(nr)!
n!
r!(nr)!
Root...................................................... As
Sine ...................................................... S
Square.................................................. K
Square root .......................................... AL
Tangent ................................................ h
Permutation.......................................... Am
Combination ......................................... An
* fx-82SOLAR II/fx-260SOLAR II only
• Statistics (SD Mode)
Arithmetic mean ................................... A`
Data delete........................................... A[
Data input............................................. }
Number of data .................................... Ar
Population standard deviation ............. Ap
Sample standard deviation .................. Aq
Statistical register clear ....................... Au
Sum of squares of values .................... Aa
Sum of values ...................................... Ao
kExponential Display Formats
This calculator can display up to 10 digits. Larger values are
automatically displayed using exponential notation. In the
case of decimal value, you can select between two formats
that determine at what point exponential notation is used.
• 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.
To switch between NORM 1 and NORM 2
Press F9. There is no indication on the display of which
format is currently in effect, but you can determine the
setting by performing the following calculation.
1 \200 =5. –03 NORM 1 format
0.005 NORM 2 format
• All of the examples in this manual show calculation results
using the NORM 1 format.
kWhen you have a problem......
If calculation results are not what you expect or if an error
occurs, perform the following steps.
1. F0(COMP mode)
2. F4(DEG mode)
3. F9(NORM mode)
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.
kMaking Corrections During Calculations
• If you make a mistake when inputting a value (but did
not yet press an operator key), use Qto backspace and
delete input digits one-by-one. Or you can press kto
clear the input entirely and start again.
• In a series of calculations, press kwhile an intermediate
result is displayed to clear only the last calculation
performed.
• To change the operator key (+, ,, -, \, w, As,
etc.) you just pressed, simply press the correct operator
key. In this case, the operator of the last key you press is
used, but the operation retains the order of precedence of
the operation for the first key you pressed.
kOverflow or Error Check
The following conditions make further calculation impossible.
a. When a result (whether intermediate or final) or a total
accumulated in memory is greater than ±9.999999999
1099. (“–E–” indicator appears on the display.)
b. When function calculations are performed using a value
that exceeds the input range. (“–E–” indicator appears
on the display.)
c. When an illogical operation (such as an attempt to
calculate oand σnwhile n0) is performed during
statistical calculations. (“–E–” indicator appears on the
display.)
d. When an illegal mathematical operation (such as division
by zero) is performed. (“–E–” indicator appears on
display.)
e. The total number of nested parentheses levels exceeds
six, or when more than 18 pairs of parentheses are used.
(“– 1–” indicator appears on the display.)
• To clear any of the above conditions, press tand
perform the calculation from the beginning.
• In the case of condition e, you could also press k. This
clears the intermediate result just prior to the overflow, so
you can continue with the calculation from that point.
• No error occurs when the result is within the range of
(11099) to (11099). Instead, the display shows all
zeros.
kPower Supply
This calculator is powered by a solar cell that converts
available light into electrical power.
Solar Cell Precautions
• The solar cell requires at least 50 lux of light to provide
power.
• If available light is too low, the display may become dim,
calculation functions may become impossible, or the
contents of the independent memory may be lost. If this
happens, move to an area with more light.
kOrder of Operations and Levels
Operations are performed in the following order of
precedence.
1. Functions
2. xy, x1/y, R →P, P →R, nPr,nCr
3. ,
4. ,
• Operations with the same precedence are performed
from left to right, with operations enclosed in parentheses
performed first. If parentheses are nested, the operations
enclosed in the innermost set of parentheses are
performed first.
• Registers L1through L6store operations. There are six
registers, so calculations up to six levels can be stored.
• Each level can contain up to three open parentheses, so
parentheses can be nested up to 18 times. RJA536287-001V02
Functions Input Range
SD
x 11050
n 110100
n, o:n≠0
n–1 :n≠0, 1
* fx-82SOLAR II/fx-260SOLAR II only
• For a single calculation, calculation error is 1 at the 10th
digit. (In the case of exponential display, calculation error
is 1 at the last significant digit.) Errors are cumulative
in the case of consecutive calculations, which can also
cause them to become large. (This is also true of internal
consecutive calculations that are performed in the case of
xy,x1/y,x!, 3x, nPr, nCr,etc.)
In the vicinity of a function’s singular point and point of
inflection, errors are cumulative and may become large.
Calculation Capacity:
• Input/Basic Calculations
10-digit mantissa; or 10-digit mantissa plus 2-digit
exponent up to 10±99
kSpecifications
Power Supply: Solar cell
Operating Temperature: 0°C40°C (32°104°F)
Dimensions: 9 (H)  70.5 (W)  121.5 (D) mm
3/8" (H)  2-3/4" (W)  4-3/4" (D)
Weight: 55g (1.9oz)
CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome,
Shibuya-ku, Tokyo 151-8543, Japan
Manufacturer:
CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome
Shibuya-ku, Tokyo 151-8543, Japan
Responsible within the European Union:
Casio Europe GmbH
Casio-Platz 1
22848 Norderstedt, Germany
www.casio-europe.com
fx-82SOLAR260SOLARIINFEN161212.indd2fx-82SOLAR260SOLARIINFEN161212.indd2 16/12/1210:5116/12/1210:51