Casio CFX-9850GB PLUS User manual

fx-9860G Series

Software Version 1.10

User’s Guide

CASIO Worldwide Education Website

http://edu.casio.com

CASIO EDUCATIONAL FORUM

http://edu.casio.com/forum/

20070201

TURNING POWER ON AND OFF

USING MODES

BASIC CALCULATIONS

REPLAY FEATURE

FRACTION CALCULATIONS

EXPONENTS

ONBOARD FUNCTION MANUAL

GRAPH FUNCTIONS

DUAL GRAPH

DYNAMIC GRAPH

TABLE FUNCTION

Quick-Start

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Quick-Start

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, 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

Calculator power turns off automatically if you do not perform any operation within

the Auto Power Off trigger time you specify. You can specify either 10 minutes or 60

minutes as the trigger time.

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

• MAT mode

1. Press mto display the Main Menu.

Quick-Start

20070201

2. Use defc to highlight RUN

• MAT

and then press w.

This is the initial screen of the RUN

• MAT mode,

where you can perform manual calculations, matrix

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. Press

bf*d+gbw.

Parentheses Calculations

Example: 15 × (3 + 61)

1. Press

bf*(d

+gb)w.

Built-In Functions

This calculator 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

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1. Press!m to display the Setup screen.

2. Press

cccccc1(Deg)

to specify degrees as the angle unit.

3. Press

Jto clear the menu.

4. Press

oto clear the unit.

5. Press

cf*sefw.

REPLAY FEATURE

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

was performed 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

dto move the cursor (I) to the right side of 4.

3. Press

Dto delete 4.

4. Press

5. Press

wto execute the calculation again.

SET UPSET UP

Quick-Start

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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: 31/16 + 37/9

1. Press

2. Press db$bg+

dh$jw.

Indicates 871/144

Converting an Improper Fraction to a Mixed Fraction

While an improper fraction is shown on the display, press !Mto convert it to a

mixed fraction.

Press !Magain to convert back to an improper 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.

Quick-Start

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EXPONENTS

Example: 1250 × 2.065

1. Press

2. Press

bcfa*c.ag.

3. Press

Mand the ^ indicator appears on the display.

4. Press

f. The ^5 on the display indicates that 5 is an exponent.

5. Press

ONBOARD FUNCTION MANUAL

You can use the catalog function to display the command onboard function manual.

The onboard function manual includes an explanation of the command, syntax

information, one or more examples of how to use the command, and the function key

sequence.

Example: To display onboard function manual information for the nCrcommand.

1. Press o.

2. Press !e(CATALOG).

3. Press I(C) c.

Quick-Start

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4. Press 5(HELP).

Onboard function manual

GRAPH FUNCTIONS

The graphing capabilities of this calculator makes it possible to draw complex graphs

using either rectangular coordinates (horizontal axis: x ; vertical axis: y ) or polar

coordinates (angle:

; distance from origin: r ).

All of the following graphing examples are performed starting from the calculator setup

in effect immediately following a reset operation.

Example 1: To graph Y = X(X + 1)(X – 2)

1. Press

2. Use

defc to highlight GRAPH,

and then press w.

3. Input the formula.

v(v+b)

(v-c)w

4. Press

6(DRAW) or wto draw the graph.

Quick-Start

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Example 2: To determine the roots of Y = X(X + 1)(X – 2)

1. Press

!5(G-SLV).

2. Press 1(ROOT).

Press

efor other roots.

Example 3: Determine the area bounded by the origin and the X = –1 root obtained for

Y = X(X + 1)(X – 2)

1. Press !5(G-SLV)6(g).

2. Press 3(∫dx).

3. Use dto move the pointer to the location where

X = –1, and then press w. Next, use eto

move the pointer to the location where X = 0, and

then press wto input the integration range,

which becomes shaded on the display.

Quick-Start

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DUAL GRAPH

With this function you can split the display between two areas and display two graph

windows.

Example: To draw the following two graphs and determine the points of intersection

Y1 = X(X + 1)(X – 2)

Y2 = X + 1.2

1. Press

!mcc1(G+G) to

specify “G+G” for the Dual Screen setting.

2. Press

J, and then input the two functions.

v(v+b)

(v-c)w

v+b.cw

3. Press

6(DRAW) or wto draw the graphs.

Box Zoom

Use the Box Zoom function to specify areas of a graph for enlargement.

1. Press

!2(ZOOM) 1(BOX).

2. Use

defcto move the pointer to

one corner of the area you want to specify and then

press w.

SET UPSET UP

Quick-Start

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