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Casio CFX-9850GB manual

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Table of contents for the manual

  • Page 1

    E http://world.casio.com/edu_e/ User’s Guide fx-9750G PLUS CFX-9850G PLUS CFX-9850GB PLUS CFX-9950GB PLUS[...]

  • Page 2

    fx-9750G PLUS o wners... This manual cov ers the oper ations of various diff erent calculator models . Note the meaning of the following symbols when using this manual. 8-1 Before T rying to Draw a Graph k k k k k Entering the Graph Mode On the Main Menu, select the GRAPH icon and enter the GRAPH Mode. When you do, the Graph Function menu appears o[...]

  • Page 3

    i BEFORE USING THE CALCULA TOR 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 o key , attach the case to the calculator and then turn the calculator over . Re[...]

  • Page 4

    ii 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 w or simply press c E to display the contrast adjustment screen. 7. Adjust the contrast. u To adjust the contrast •U s e f and[...]

  • Page 5

    ABOUT THE COLOR DISPLA Y The display uses three colors: orange, blue, and green, to make data easier to understand. •M a i n Menu • Display Color Adjustment •G raph Function Menu •G raph Display (Example 1) • Graph Display (Example 2) •G raph-T o-T able Display • Dynamic Graph Display •T able & Graph Numeric T able • Recursion[...]

  • Page 6

    •S ta tistical Regression Graph Example •W hen you draw a graph or run a program, any comment text normally appears on the display in blue. Y ou can, however , change the color of comment text to orange or green. Example: To d r aw a sine curve 1. Enter the GRAPH Mode and input the following. 3 (TYPE) 1 (Y=) (Specifies rectangular coordinates.)[...]

  • Page 7

    KEYS Alpha Lock Normally , once you press a and 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 a again. v[...]

  • Page 8

    KEY T ABLE vi Page Page Page Page Page Page 128 Page Page Page Page Page 132 113 47 46 24 7 4 6 154 144 120 369 4 22 7 2 83 46 46 46 46 45 45 45 45 21 20 36 36 36 36 39 36 45 36 47 36 49 49 47 36 45 45 22 49[...]

  • Page 9

    Tu r n ing Power On And Off Using Modes Basic Calculations Replay Features Fraction Calculations Exponents Graph Functions Dual Graph Box Zoom Dynamic Graph T able Function Quick-Start[...]

  • Page 10

    Quick-Star t viii We lcome 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 read[...]

  • Page 11

    Quick-Start ix 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 CALCULA TIONS 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 par[...]

  • Page 12

    Quick-Star t x 1. Press o . 2. Press ! m SET UP to switch the set up display . 3. Press cccc 1 (Deg) to specify degrees as the angle unit. 4. Press J to clear the menu. 5. Press o to clear the unit. 6. Press cf* s ef w . REPLA Y FEA TURES With the replay feature, simply press d or e to recall the last calculation that was performed. This recalls th[...]

  • Page 13

    Quick-Start xi FRACTION CALCULA TIONS Y ou 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. Press o . 2. Press b $ bf $ bg+d h $ j w . Converting a Mixed Fraction to an Improper Fraction While a mixed fraction is shown on the display , pr[...]

  • Page 14

    Quick-Star t xii EXPONENTS Example: 1250 × 2.06 5 1. Press o . 2. Press bcfa*c.ag . 3. Press M and the ^ indicator appears on the display . 4. Press f . The ^5 on the display indicates that 5 is an exponent. 5. Press w .[...]

  • Page 15

    Quick-Start xiii 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 coordi- nates (angle: θ ; distance from origin: r ). Example 1: To graph Y = X(X + 1)(X – 2) 1. Press m . 2. Use d , e , f , and c to highlig[...]

  • Page 16

    Quick-Star t xiv 2. Press 1 (ROOT). Press e for 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-Solv). 12345 6 2. Press 6 ( g ). 12 3 456 3. Press 3 ( ∫ dx ). 4. Us e d to move the pointer to the location where X = –1, and then press w . Next, use e to move[...]

  • Page 17

    Quick-Start xv DUAL GRAPH With this function you can split the display between two areas and display two graphs on the same screen. 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 !Z cc 1 (Grph) to specify “Graph” for the Dual Screen setting. 1 23456 2. Press J , an[...]

  • Page 18

    Quick-Star t xvi 3. Us e d , e , f , and c to move the pointer again. As you do, a box appears on the display . Move the pointer so the box encloses the area you want to enlarge. 4. Pr ess w , and the enlarged area appears in the inactive (right side) screen. DYNAMIC GRAPH Dynamic Graph lets you see how the shape of a graph is af fected as the valu[...]

  • Page 19

    Quick-Start xvii 4. Press 4 (V AR) b w to assign an initial value of 1 to coefficient A. 1 2 3456 5. Press 2 (RANG) b w d w b w to specify the range and increment of change in coefficient A. 6. Press J . 7. Press 6 (DYNA) to start Dynamic Graph drawing. The graphs are drawn 10 times. ↓ ↓↑ ↓↑[...]

  • Page 20

    Quick-Star t xviii TABLE FUNCTION The T able Function makes it possible to generate a table of solutions as different values are assigned to the variables of a function. Example: To create a number table for the following function Y = X (X+1) (X–2) 1. Press m . 2. Use d , e , f , and c to highlight T ABLE , and then press w . 3. Input the formula[...]

  • Page 21

    •Y our calculator is made up of precision components. Never try to take it apart. •A void dropping your calculator and subjecting it to strong impact. •D o not store the calculator or leave it in areas exposed to high temperatures or humidity , or large amounts of dust. When exposed to low temperatures, the calculator may require more time to[...]

  • Page 22

    xx Be sure to keep physical records of all important data! The large memory capacity of the unit makes it possible to store large amounts of data. Y ou should note, however , that low battery power or incorrect replacement of the batteries that power the unit can cause the data stored in memory to be corrupted or even lost entirely . Stored data ca[...]

  • Page 23

    ••••••••••••••••• •• •••••••••••••••• ••• •••••••••••••••• ••• ••••••••••••••• •••• ••••••••••••••• •••• •••••••••••••• ••••[...]

  • Page 24

    Contents xxii Getting Acquainted — Read This First! ............................................................. 1 1. Key Markings ....................................................................................................... 2 2. Selecting Icons and Entering Modes .................................................................... 3 3[...]

  • Page 25

    xxiii Contents Chapter 7 Equation Calculations ................................................................... 99 7-1 Before Beginning an Equation Calculation ................................................ 100 7-2 Linear Equations with T wo to Six Unknowns ............................................. 101 7-3 Quadratic and Cubic Equations ...[...]

  • Page 26

    xxiv Contents Chapter 15 T able & Graph .............................................................................. 205 15-1 Before Using T able & Graph ...................................................................... 206 15-2 Storing a Function and Generating a Numeric T able ................................ 207 15-3 Editing and D[...]

  • Page 27

    xxv Contents 20-3 Debugging a Program ............................................................................... 358 20-4 Calculating the Number of Bytes Used by a Program ............................... 359 20-5 Secret Function ......................................................................................... 360 20-6 Searching for a F[...]

  • Page 28

    xxvi Contents[...]