Casio CFX-9850GB PLUS Getting Started
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Casio CFX-9850GB PLUS Getting Started

Casio CFX-9850GB PLUS Getting Started

Introductory graphics calculator workshop
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See also: Programming Manual , Basic Operation Guide
CASIO
Introductory
Graphics Calculator
Workshop
Using the Casio CFX-9850GB PLUS
Casio Education Division
Ph (02) 9370 9100
Fax (02) 9417 8957
Email casio.edusupport@shriro.com.au

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Summary of Contents for Casio CFX-9850GB PLUS

  • Page 1 CASIO  Introductory Graphics Calculator Workshop Using the Casio CFX-9850GB PLUS Casio Education Division Ph (02) 9370 9100 Fax (02) 9417 8957 Email casio.edusupport@shriro.com.au...

  • Page 2: Getting Started With The Cfx-9850 Gb Plus

    GETTING STARTED WITH THE CFX-9850 GB PLUS Turning ON • Press the AC/ key. When you turn your CFX 9850 on, you will see the main menu screen. Each icon on the main menu screen stands for a MODE on the calculator. Below is a short summary of the main purpose(s) of each mode.

  • Page 3: Resetting The Calculator

    Resetting the Calculator Resetting the calculator serves two main purposes: It clears any previous operations that the current user may not be familiar with or want to use. It returns the calculator to its initial default settings. ♦ To reset the calculator, using the arrow keys highlight the MEM (memory) icon and press the blue EXE key.
  • Page 4 ♦ The yellow SHIFT key enables the user to access the yellow (secondary) functions located above the calculator keys. ♦ Casio Scientific and Graphic Calculators use S-VPAM (Super Visually Perfect Algebraic Method), that is ‘how you say / write it, is how you enter it’. For example, the square root of 12 is entered by SHIFT then X followed by 12, i.e.
  • Page 5 Note that you have now changed the angle setting of the calculator to degrees. The calculator will remain in degrees until you either reset the calculator or alter the setting as you have recently done. Memories Results can be stored in one of twenty six variable memories by using the followed by any of the letters A –...

  • Page 6: Graphing Functions

    GRAPHING FUNCTIONS Enter the GRAPH mode from the main menu. The X,θ θ θ θ ,T Key The variable key is located just under the red ALPHA key. This key is the only key to be used when entering a variable in an equation. The View-Window The view-window option displays the dimensions and scale of the axes that appear on the calculator screen.

  • Page 7: Finding The Gradient Of The Tangent At A Point

    Integration Press G-SOLV (SHIFT F5) then F6 (the continuation key) and finally ∫dx (F3). Use the left arrow key to set the lower limit at X=-3 then press EXE. Set the upper limit at X=0 and press EXE. Finding the gradient of the tangent at a point Press SHIFT MENU to enter the SETUP of the graph mode.

  • Page 8: Zooming And Sketching

    Zooming and Sketching Once you have drawn a particular function, by pressing SHIFT F2 you will activate the Zoom option. This allows the user to zoom in or out from a particular point on the function by a given or specified factor. It will also allow the user to zoom in on a specific part of the graph, for example a root or point of intersection.
  • Page 9 Families of Functions / Restricted Domains The GRAPH will allow us to investigate families of functions in a very purposeful and constructive manner. For example, if a student wants to understand the effect of the addition of a constant in a quadratic function. The { } parentheses, secondary functions above the multiplication and division keys, allow us to construct and draw a family of functions.
  • Page 10 GRAPHING FUNCTIONS Sketching Trigonometric Functions Before sketching a trig function you must decide whether to sketch in degrees or radians. For the purposes of this example, it is imperative that we sketch in radians. From the RUN mode enter the SET UP (SHIFT MENU) and check that the Angle setting of the calculator is set to radians.

  • Page 11: Dynamic Graphing

    GRAPHING FUNCTIONS Dynamic Graphing Enter the DYNA mode of the calculator from the main menu (MENU 6). Type in the equation Asin X. Dynamic mode will allow us to assign a range of values to this variable, A, and establish the manner in which the variable effects the function. Press VAR (F4) then RANG (F2) to select the range of the variable A.
  • Page 12 Table Mode Assume we want a circle to have an area of 30 m , as shown in the diagram opposite. What radius should we make our circle? Enter the TABLE mode from the main menu. Type the equation Y=πX .
  • Page 13 STATISTICS The following data is a set of marks for 7 students out of 40. 35, 20, 24, 28, 26, 22, 24 Enter STAT mode, and then enter the test scores into List 1(type in the number followed by EXE). Press CALC (F2) then 1VAR (F1) to display the summary statistics.
  • Page 14 STATISTICS Comparing data sets with box and whisker plots Resting Heart Rate – RHR Active Heart Rate – ACR RHR 67, 69, 72, 68, 74 ACR 82, 85, 98, 80, 97 Enter into the STAT mode, then enter the resting and active heart rates into List1 and List 2 respectively.
  • Page 15 Press DRAW (F6) to view the two median box plots simultaneously. Trace the graphs (SHIFT F1) to obtain and record their respective five number statistical summaries.
  • Page 16 FINANCIAL MATHEMATICS Annuities and Loan Repayments Amortisation describes the process used to calculate the principal to interest portion of an installment (for example monthly), the remaining principal and the amount of principal and interest repaid up to any point to repay a debt. Defined as: Amortise –...
  • Page 17 We can use PM1 to evaluate the proportion of interest : principal of any repayment for the course of the loan. Additionally, PM2 can be used to isolate any period of the loan to evaluate the proportion of the sum of interest : principal, and show the balance remaining on the loan after the installment PM2.
  • Page 18 Loan Schedule 2 Let’s assume that we can afford to pay off more than the minimum amount of $1264.14 each month. Assume that we can afford to pay $2000.00 per month. Return to the initial Compound Interest Screen and change the payment to PMT= -2000, which is $2000.00 per month.

  • Page 19: Simultaneous Equations

    SOLVING LINEAR AND NON-LINEAR EQUATIONS The calculator is able to provide numerical approximations to solutions, but cannot give exact results where the solutions are irrational. SIMULTANEOUS EQUATIONS Press MENU A to enter EQUA mode then press F1 to select simultaneous equations. Systems of equations with up to six unknowns can be solved using this feature.

  • Page 20: Polynomial Equations

    POLYNOMIAL EQUATIONS After selecting EQUA press Polynomial (F2) so that we may find the solution(s) to either a quadratic or cubic polynomial, (the degree of the polynomial is the power of the leading term in the polynomial). A quadratic polynomial has a degree of two; a cubic polynomial has a degree of three;...
  • Page 21 EQUATION SOLVER Given that V=U+AT and U=0, V=50 and A=10 find T. Enter EQUA from the main menu then Solver (F3). Type in the equation V = U + AT. NB: To type letters press the ALPHA key then the key with the appropriate red letter on top of it.

  • Page 22: Troubleshooting

    Troubleshooting Problem: No graph is coming up on my screen in the graph or dynamic mode. Solution: Press SHIFT F3 then F1 then EXE. Draw the graph. Press SHIFT F2 then choose F4 until you can see the graph. Alternatively, press SHIFT F2 then F5. Problem: No graph is coming up on my screen in the statistics mode Solution: Press SHIFT MENU then F1 for Auto then EXE.

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