Casio CFX-9850G PLUS User manual

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User’s Guide

fx-9750G PLUS

CFX-9850G PLUS

CFX-9850GB PLUS

CFX-9950GB PLUS

fx-9750G PLUS owners...

This manual covers the operations of various different calculator models.Note the meaning of the following

symbols when using this manual.

8-1 Before Trying to Draw a Graph

kEntering the Graph Mode

On the Main Menu, select the GRAPH icon and enter the GRAPH Mode. When

you do, the Graph Function menu appears on the display. You can use this menu

to store, edit, and recall functions and to draw their graphs.

• {SEL} ... {draw/non-draw status}

• {DEL} ... {function delete}

• {TYPE} ... {graph type menu}

• {COLR} ... {graph color}

• {GMEM} ... {graph memory save/recall}

• {DRAW} ... {graph draw}

Memory area

Use

and

to change selection.

CFX

CASIO ELECTRONICS CO., LTD.

Unit 6, 1000 North Circular Road,

London NW2 7JD, U.K.

Important!

Please keep your manual and all information handy for

future reference.

indicates {COLR} is not supported by the fx-9750G PLUS.

CFX

Meaning

Indicates information about a function that is not supported by the fx-9750G PLUS.

You can skip any information that has this mark next to it.

CFX

Symbol

BEFORE USING THE CALCULATOR

FOR THE FIRST TIME...

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. Making sure that you do not accidently press the okey, attach the case to the

calculator and then turn the calculator over. Remove the back cover from the calculator

by pulling with your finger at the point marked 1.

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, making sure that its tabs enter the holes marked 2and turn

the calculator front side up. The calculator should automatically turn on power and

perform the memory reset operation.

BACK UP

5. Press m.

•If the Main Menu shown above 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

wor simply press

to display the contrast adjustment screen.

7. Adjust the contrast.

uTo adjust the contrast

•Usefand cto move the pointer to CONTRAST.

•Press eto make the figures on the display darker, and dto make them

lighter.

uTo adjust the tint

1. Use fand cto move the pointer to the color you want to adjust (ORANGE,

BLUE, or GREEN).

2. Press eto add more green to the color, and dto add more orange.

8. To exit display contrast adjustment, press m.

* The above shows the fx-9750G

PLUS screen.

* The above shows the CFX-9850

(9950)G(B) PLUS screen.

fx-9750G PLUSCFX-9850(9950)GB PLUS,

CFX-9850G PLUS

CFX

P button

ABOUT THE COLOR DISPLAY

The display uses three colors: orange, blue, and green, to make data easier to

understand.

•Main Menu • Display Color Adjustment

•Graph Function Menu

•Graph Display (Example 1) • Graph Display (Example 2)

•Graph-To-Table Display • Dynamic Graph Display

•Table & Graph Numeric Table • Recursion Formula Convergence/

Divergence Graph Example

iii

CFX

•Statistical Regression Graph Example

•When you draw a graph or run a program, any comment text normally appears

on the display in blue. You can, however, change the color of comment text to

orange or green.

Example:

To d raw a sine curve

1. Enter the GRAPH Mode and input the following.

3(TYPE)1(Y=)

(Specifies rectangular coordinates.)

svwf45

(Stores the expression.)

2. 4(COLR)

23456

•Press the function key that corresponds to the color you want to use for the

graph:

1for blue, 2for orange, 3for green.

3. 2(Orng)

(Specifies the graph color.)

4. 6(DRAW)

(Draws the graph)

You can also draw multiple graphs of different color on the same screen, making

each one distinct and easy to view.

CFX

KEYS

Alpha Lock

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

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

keyboard locks in alpha input until you press aagain.

KEY TABLE

Page Page Page Page Page Page

128

Page Page Page Page Page

132 113

47 46

24746

154 144 120

369 4

227283

46 46

45 45

Turning Power On And Off

Using Modes

Basic Calculations

Replay Features

Fraction Calculations

Exponents

Graph Functions

Dual Graph

Box Zoom

Dynamic Graph

Table Function

Quick-Start

viii

Welcome to the world of graphing calculators.

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

functions, from turning the power on, to specifying colors, and on to graphing complex

equations. When you’re done, you’ll have mastered the basic operation of this calculator and

will be ready to proceed with the rest of this user’s guide 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.

TURNING POWER ON AND OFF

To turn power on, press o.

To turn power off, press !

OFF

Note that the calculator automatically turns 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

This calculator 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.

* The above shows the CFX-9850

(9950)G(B) PLUS screen.

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