Casio FX9750GIIWE User manual

BEFORE USING THE CALCULATOR

FOR THE FIRST TIME...

This calculator does not contain any main batteries when you purchase it. Be sure to perform

the following procedure to load batteries, reset the calculator, and adjust the contrast before

trying to use the calculator for the first time.

1. Remove the back cover from the calculator by pressing it in the direction indicated by

arrow 1, and then sliding it in the direction indicated by arrow 2.

2. Load the four batteries that come with calculator.

• Make sure that the positive (+) and negative (–) ends of the batteries are facing correctly.

3. Remove the insulating sheet at the location marked “BACK UP” by pulling in the direction

indicated by the arrow.

4. Replace the back cover onto the calculator and turn the calculator front side up, which

should automatically turn on power and perform the memory reset operation.

BACK UPBACK UP

MAIN

BACK UP

MAIN

5. Press m.

If the Main Menu shown to the right is not on the display,

press the P button on the back of the calculator to perform

memory reset.

6. Use the cursor keys (f, c, d, e) to select the CONT icon and press w

or simply press sto display the contrast adjustment screen.

7. Use dand eto adjust contrast.

•dmakes figures on the screen lighter, while emakes them darker.

• Holding down dor echanges the contrast setting at high speed.

8. After adjusting the contrast, press mto return to the Main Menu.

P button

KEYS

Alpha Lock

Normally, once you press aand then a key to input an alphabetic character, the keyboard

reverts to its primary functions immediately. If you press !and then a, the keyboard

locks in alpha input until you press aagain.

iii

KEY TABLE

Page Page Page Page Page Page

146

Page Page Page Page Page

151 129

57 56

25756

174 164 136

333 4

2 31333

56 56

55 55

Switching Power On And Off

Auto Power Off Function

Using Modes

Basic Calculations

Replay Features

Fraction Calculations

Exponents

Graph Functions

Dual Graph

Box Zoom

Dynamic Graph

Table Function

Quick-Start

Welcome to the world of graphing calculators and the CASIO fx-9750G.

Quick-Start is not a complete tutorial, but it takes you through many of the most common

functions, from turning the power on to graphing complex equations. When you’re done, you’ll

have mastered the basic operation of the fx-9750G and will be ready to proceed with the rest

of this manual to learn the entire spectrum of functions available.

Each step of the examples in Quick-Start is shown graphically to help you follow along

quickly and easily. When you need to enter the number 57, for example, we’ve indicated it as

follows: Press fh

Whenever necessary, we’ve included samples of what your screen should look like.

If you find that your screen doesn’t match the sample, you can restart from the beginning by

pressing the “All Clear” button o.

SWITCHING POWER ON AND OFF

To switch power on, press o.

To switch power off, press !

OFF

AUTO POWER OFF FUNCTION

Note that the unit automatically switches power off if you do not perform any operation for

about six minutes (about 60 minutes when a calculation is stopped by an output command

(^)).

USING MODES

The fx-9750G makes it easy to perform a wide range of calculations by simply selecting

the appropriate mode. Before getting into actual calculations and operation examples, let’s

take a look at how to navigate around the modes.

To select the RUN Mode

1. Press mto display the Main Menu.

Quick-Start

vii

2. Use defc to highlight RUN and then

press w.

This is the initial screen of the RUN mode, where you

can perform manual calculations, and run programs.

BASIC CALCULATIONS

With manual calculations, you input formulas from left to right, just as they are written on

paper. With formulas that include mixed arithmetic operators and parentheses, the calculator

automatically applies true algebraic logic to calculate the result.

Example:

15 ×3 + 61

1. Press oto clear the calculator.

2. Pressbf*d+gbw.

Parentheses Calculations

Example:

15 ×(3 + 61)

1. Pressbf*(d

+gb)w.

Built-In Functions

The fx-9750G includes a number of built-in scientific functions, including trigonometric and

logarithmic functions.

Example:

25 ×sin 45˚

Important!

Be sure that you specify Deg (degrees) as the angle unit before you try this

example.

Quick-Start

viii

1. Presso.

2. Press!

SET UP

to switch the set up display.

3. Presscccc1(Deg) to specify

degrees as the angle unit.

4. PressJto clear the menu.

5. Pressoto clear the unit.

6. Presscf*sefw.

REPLAY FEATURES

With the replay feature, simply press dor eto recall the last calculation that was

performed. This recalls the calculation so you can make changes or re-execute it as it is.

Example:

To change the calculation in the last example from (25 ×sin 45˚) to (25 ×sin 55˚)

1. Press dto display the last calculation.

2. Press dtwice to move the cursor under the 4.

3. Press f.

4. Press wto execute the calculation again.

Quick-Start

FRACTION CALCULATIONS

You can use the $key to input fractions into calculations. The symbol “ {” is used to

separate the various parts of a fraction.

Example:

1 15/16 + 37/9

1. Presso.

2. Pressb$bf$

bg+dh$

jw.

Converting a Mixed Fraction to an Improper Fraction

While a mixed fraction is shown on the display, press !

d/c

to convert it to an

improper fraction.

Press !

d/c

again to convert back to a mixed fraction.

Converting a Fraction to Its Decimal Equivalent

While a fraction is shown on the display, press Mto convert it to its decimal equivalent.

Press Magain to convert back to a fraction.

Indicates 6

144

Quick-Start

EXPONENTS

Example:

1250 × 2.065

1. Presso.

2. Pressbcfa*c.ag.

3. PressMand the ^indicator appears on the display.

4. Pressf. The ^5 on the display indicates that 5 is

an exponent.

5. Pressw.

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