Casio fx-3650P II User manual

fx-3650P II
User's Guide
CASIO Worldwide Education Website
http://edu.casio.com
CASIO EDUCATIONAL FORUM
http://edu.casio.com/forum/
RJA527880-001V01
E

E-1
Getting Started
Thank you for purchasing this CASIO product.
kBefore using the calculator for the first time...
Before using the calculator, slide its hard case
downwards to remove it, and then affix the hard
case to the back of the calculator as shown in the
illustration nearby.
AAfter you are finished using the calculator...
Remove the hard case from the back of the calculator, and re-install it onto the front.
kResetting the Calculator to Initial Defaults
Perform the operation below when you want to return the calculator’s setup to its initial
defaults. Note that this procedure will also clear all memory contents (independent memory,
variable memory, Answer Memory, statistical calculation sample data, and program data).
!9(CLR)
3(All)
w
kAbout this Manual
• The displays and illustrations (such as key markings) shown in this User’s Guide are for
illustrative purposes only, and may differ somewhat from the actual items they represent.
• The contents of this manual are subject to change without notice.
• In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral,
incidental, or consequential damages in connection with or arising out of the purchase or
use of this product and items that come with it. Moreover, CASIO Computer Co., Ltd. shall
not be liable for any claim of any kind whatsoever by any other party arising out of the use
of this product and the items that come with it.
Safety Precautions
Battery
• Keep batteries out of the reach of small children.
• Use only the type of battery specified for this calculator in this manual.

E-2
Operating Precautions
• Even if the calculator is operating normally, replace the battery at least once every
three years (LR44 (GPA76)).
A dead battery can leak, causing damage to and malfunction of the calculator. Never
leave a dead battery in the calculator. Do not try using the calculator while the battery is
completely dead.
• The battery that comes with the calculator discharges slightly during shipment
and storage. Because of this, it may require replacement sooner than the normal
expected battery life.
• Do not use an oxyride battery* or any other type of nickel-based primary
battery with this product. Incompatibility between such batteries and product
specifications can result in shorter battery life and product malfunction.
• Low battery power can cause memory contents to become corrupted or lost
completely. Always keep written records of all important data.
• Avoid use and storage of the calculator in areas subjected to temperature
extremes, and large amounts of humidity and dust.
• Do not subject the calculator to excessive impact, pressure, or bending.
• Never try to take the calculator apart.
• Use a soft, dry cloth to clean the exterior of the calculator.
• Whenever discarding the calculator or batteries, be sure to do so in accordance
with the laws and regulations in your particular area.
• Be sure to keep all user documentation handy for future reference.
* Company and product names used in this manual may be registered trademarks or
trademarks of their respective owners.

E-3
π
Contents
Getting Started..........................................................................................1
Safety Precautions ...................................................................................1
Operating Precautions.............................................................................2
Before starting a calculation... ................................................................4
Calculation Modes and Setup .................................................................5
Inputting Calculation Expressions and Values......................................7
Basic Calculations.................................................................................. 11
Calculation History and Replay.............................................................13
Calculator Memory Operations .............................................................14
Scientific Function Calculations ..........................................................17
Using 103Engineering Notation (ENG).................................................25
Complex Number Calculations (CMPLX) .............................................25
Statistical Calculations (SD/REG) .........................................................29
Base-nCalculations (BASE)..................................................................40
Program Mode (PRGM) ..........................................................................43
Appendix .................................................................................................53
Power Requirements..............................................................................57
Specifications .........................................................................................58

E-4
Before starting a calculation...
kTurning On the Calculator
Press
O. The calculator will enter the calculation mode (page 5) that it was in the last time
you turned it off.
A
Adjusting Display Contrast
If the figures on the display become hard to read, try adjusting display contrast.
1. Press
!N(SETUP)
db(Contrast).
• This will display the contrast adjustment screen.
2. Use
dand eto adjust display contrast.
3. After the setting is the way you want, press
Aor !p(EXIT).
Note
You can also use
+and -to adjust contrast while the calculation mode menu that
appears when you press the
,key is on the display.
Important!
If adjusting display contrast does not improve display readability, it probably means that
battery power is low. Replace the battery.
A
Turning Off the Calculator
Press
!A(OFF).
The following information is retained when you turn off the calculator.
• Calculation modes and setup (page 5)
• Answer Memory (page 14), independent memory (page 15), and variable memory (page
16) contents
kKey Markings
M–
M
DT CL
ALOGIC
x !
8
Function Colors To perform the function
1M+ Press the key.
2M– Text: Amber Press !and then press the key.
3M Text: Red Press aand then press the key.
4DT Text: Blue In the SD or REG Mode, press the key.
5CL Text: Amber
Frame: Blue
In the SD or REG Mode, press !and then press
the key.
6∠ Text: Amber
Frame: Purple
In the CMPLX Mode, press !and then press the
key.
L I GHT DARK
CASIO

E-5
Function Colors To perform the function
7A Text: Red
Frame: Green
Press aand then press the key (variable A).
In the BASE Mode, press the key.
8LOGIC Text: Green In the BASE Mode, press the key.
kReading the Display
A
Input Expressions and Calculation Results
This calculator can display both the expressions you input and calculation results on the
same screen.
Input expression
Calculation result
A
Display Symbols
The symbols described below appear on the display of the calculator to indicate the current
calculation mode, the calculator setup, the progress of calculations, and more. In this
manual, the expression “turn on” is used to mean that a symbol appears on the display, and
“turn off” means that it disappears.
The nearby sample screen shows the
7
symbol.
Calculation Modes and Setup
kSelecting a Calculation Mode
Your calculator has six “calculation modes”.
1. Press
,.
• This displays the calculation mode menu.
• The calculation mode menu has two screens. Press
,to toggle between them. You
can also switch between menu screens using
dand e.
COMP CMPLX BASE
1 2 3
SD REG PRGM
4 5 6
2. Perform one of the following operations to select the calculation mode you want.
b(COMP): COMP(Computation) c(CMPLX): CMPLX (Complex Number)
d(BASE): BASE (Base n ) e(SD): SD (Single Variable Statistics)
f(REG): REG (Paired Variable Statistics) g(PRGM): PRGM (Program)
• Pressing a number key from bto gselects the applicable mode, regardless of which
menu screen is currently displayed.
2×
(
5+4
)
–2×-3
24

E-6
kCalculator Setup
The calculator setup can be used to configure input and output settings, calculation
parameters, and other settings. The setup can be configured using setup screens, which
you access by pressing
!,(SETUP). There are six setup screens, and you can use
dand eto navigate between them.
A
Specifying the Angle Unit
90˚ =
π
2radians = 100 grads
Angle Unit Perform this key operation:
Degrees !,
b(Deg)
Radians !,
c(Rad)
Grads !,
d(Gra)
A
Specifying the Display Digits
Exponential Display Perform this key operation:
Number of Decimal Places !,
e
b(Fix)a(0) to j(9)
Significant Digits !,
e
c(Sci)b(1) to j(9), a(10)
Exponential Display Range !,
e
d(Norm)b(Norm1) or c(Norm2)
The following explains how calculation results are displayed in accordance with the setting
you specify.
• From zero to nine decimal places are displayed in accordance with the number of decimal
places (Fix) you specify. Calculation results are rounded off to the specified number of
digits.
Example: 100 ÷ 7 = 14.286 (Fix = 3)
• After you specify the number of significant digits with Sci, calculation results are displayed
using the specified number of significant digits and 10 digits to the applicable power.
Calculation results are rounded off to the specified number of digits.
Example: 1 ÷ 7 = 1.4286 × 10
–1
(Sci = 5)
• Selecting Norm1 or Norm2 causes the display to switch to exponential notation whenever
the result is within the ranges defined below.
Norm1: 10
–2
>
x

,
x
>10
10
Norm2: 10
–9
>
x
,
x
>10
10
Example: 1 ÷ 200 = 5. × 10
–3
(Norm1) 0.005 (Norm2)
A
Specifying the Fraction Display Format
Fraction Format Perform this key operation:
Mixed Fractions !,
ee
b(ab/c)
Improper Fractions !,
ee
c(d/c)

E-7
A
Specifying the Complex Number Display Format
Complex Number Format Perform this key operation:
Rectangular Coordinates !,
eee
b(a +b
i )
Polar Coordinates !,
eee
c(r
∠
 )
A
Specifying the Statistical Frequency Setting
Frequency Setting Perform this key operation:
Frequency On !,
dd
b(FreqOn)
Frequency Off !,
dd
c(FreqOff)
kClearing the Calculation Mode and Setup Settings
Perform the procedure described below to clear the current calculation mode and all setup
settings and initialize the calculator to the following.
Calculation Mode ................................COMP (Computation Mode)
Angle Unit ........................................... Deg (Degrees)
Exponential Display............................. Norm1
Fraction Format .................................. ab/c (Mixed Fractions)
Complex Number Format ...................
a
+
bi
(Rectangular Coordinates)
Frequency Setting .............................. FreqOn (Frequency On)
Perform the following key operation to clear the calculation mode and setup settings.
!9(CLR)
2(Setup)
w
If you do not want to clear the calculator’s settings, press
Ain place of win the above
operation.
Inputting Calculation Expressions
and Values
kInputting a Calculation Expression
Your calculator lets you input a calculation expression just as it is written and execute
it by pressing
w. The calculator determines the proper priority sequence for addition,
subtraction, multiplication, division, functions and parentheses automatically.
Example: 2 × (5 + 4) – 2 × (–3) =
2*(5+4)-
2*-3w
2×
(
5+4
)
–2×-3
24

E-8
A
Inputting Scientific Functions with Parentheses (sin, cos,
',
etc.)
Your calculator supports input of the scientific functions with parentheses shown below.
Note that after you input the argument, you need to press )to close the parentheses.
sin(, cos(, tan(, sin–1(, cos–1(, tan–1(, sinh(, cosh(, tanh(, sinh–1(, cosh–1(, tanh–1(, log(, ln(,
e ^(, 10^(, '(, 3
'(, Abs(, Pol(, Rec(, arg(, Conjg(, Not(, Neg(, Rnd(, ∫(, d/dx(
Example: sin 30 =
s30)w
AOmitting the Multiplication Sign
You can omit the multiplication sign in the following cases.
• Immediately before an open parenthesis: 2 × (5 + 4)
• Immediately before a scientific function with parentheses: 2 × sin(30), 2 ×
'(3)
• Before a prefix symbol (excluding the minus sign): 2 × h123
• Before a variable name, constant, or random number: 20 × A, 2 ×
π
Important!
If you execute a calculation that includes both division and multiplication operations in which
a multiplication sign has been omitted, parentheses will be inserted automatically as shown
in the examples below.
• When a multiplication sign is omitted immediately before an open parenthesis or after a
closed parenthesis.
6 ÷ 2 (1 + 2) p6 ÷ (2 (1 + 2)) 6 ÷ A (1 + 2) p6 ÷ (A (1 + 2))
1 ÷ (2 + 3) sin(30) p1 ÷ ((2 + 3) sin(30))
• When a multiplication sign is omitted immediately before a variable, a constant, etc.
6 ÷ 2πp6 ÷ (2π) 2 ÷ 2' (2) p2 ÷ (2'(2)) 4π÷ 2πp4π÷ (2π)
• When inputting a function that uses commas (such as Pol, Rec), be sure to input the
closed parentheses required by the expression. If you do not input closed parentheses,
parentheses may not be inserted automatically as described above.
A
Final Closed Parenthesis
You can omit one or more closed parentheses that come at the end of a calculation,
immediately before the
wkey is pressed.
Example: (2 + 3) × (4 – 1) = 15
(2+3)*
(4-1w
A
Scrolling the Screen Left and Right
Input Expression 12345 + 12345 + 12345
Displayed Expression
Cursor
sin
(
30
)
05
(
2+3
)
×
(
4–1
15
345+12345+12345I

E-9
• While the
b
symbol is on the screen, you can use the
dkey to move the cursor to the
left and scroll the screen.
• Scrolling to the left causes part of the expression to run off the right side of the display,
which is indicated by the
\
symbol on the right. While the
\
symbol is on the screen,
you can use the
ekey to move the cursor to the right and scroll the screen.
• You can also press
fto jump to the beginning of the expression, or cto jump to the
end.
A
Number of Input Characters (Bytes)
As you input a mathematical expression, it is stored in memory called an “input area,”
which has a capacity of 99 bytes. This means you can input up to 99 bytes for a single
mathematical expression.
Normally, the cursor that indicates the current input location on the display is either a
flashing vertical bar (
|
) or horizontal bar ( ). When the remaining capacity of the input area
is 10 bytes or less, the cursor changes to a flashing box (
k
).
If this happens, stop input of the current expression at some suitable location and calculate
its result.
kEditing a Calculation
A
Insert Mode and Overwrite Mode
The calculator has two input modes. The insert mode inserts your input at the cursor
location, shifting anything to the right of the cursor to make room. The overwrite mode
replaces the key operation at the cursor location with your input.
Original Expression Pressing +
Insert Mode 1+2
|
34
Cursor
1+2+
|
34
Overwrite Mode
1+2 3 4
Cursor
1+2 + 4
The initial default input mode setting is insert mode.
To change to the overwrite mode, press:
1D(INS).
A
Editing a Key Operation You Just Input
Example: To correct 369 × 13 so it becomes 369 × 12
369*13
D2
369×13I
369×12I