User manual CASIO FX-5800P

[. . . ] E fx-5800P User's Guide http://world. casio. com/edu/ RJA516644-001V01 k Remove the insulation sheet! Your calculator comes with a special insulation sheet, which isolates the battery from the contacts in the battery compartment, to keep the battery from running down during storage and shipment. Be sure to remove the insulation sheet before trying to use the calculator for the first time. To remove the insulation sheet 1. Pull the tab of the insulation sheet in the direction indicated by the arrow to remove it. Pull to remove 2. After removing the insulation sheet, press the P button on the back of the calculator with a thin, pointed object to initialize the calculator. [. . . ] To select this equation type: Simultaneous Linear Equations with Two Unknowns Simultaneous Linear Equations with Three Unknowns Simultaneous Linear Equations with Four Unknowns Simultaneous Linear Equations with Five Unknowns Quadratic Equation Cubic Equation Perform this key operation: N8(EQN)1 N8(EQN)2 N8(EQN)3 N8(EQN)4 N8(EQN)c1 N8(EQN)c2 EQN type menu item: aX+bY=c aX+bY+cZ=d aX+bY+cZ+dT=e aX+bY+cZ+dT+eU=f aX +bX+c=0 aX +bX +cX+d=0 3 2 2 Note Changing the equation type after you are already using the EQN Mode to perform a calculation will cause all values currently input on the coefficient editor screen to be cleared. k Inputting Values for Coefficients Use the coefficient editor for inputting values for the coefficients of an equation. The coefficient editor screen has cells that you can use to input values for each coefficient. The number of cells that appear on the coefficient editor screen depends on the equation type you selected. A Inputting and Editing Coefficient Values · Use the cursor keys to move the cursor to the cell you want and then input a value. As you input a value or expression, it appears in the lower left corner of the display. · To clear the contents of the cell where the cursor is currently located, press o. · You must press E to finalize input into the cell where the cursor is located. This will register your input and move the cursor to the next cell. Up to six digits of the input value will be displayed in the cell when you press E. · You can input a value or calculation expression into each cell. If you input a calculation expression, pressing E will execute the calculation and display only the result in the applicable cell. · To edit the contents of a cell, use the cursor keys to move the cursor to the cell and then input what you want. E-71 Pressing E while the coefficient editor is displayed will display the solutions of the equation. k Viewing Equation Solutions Equation solution · You can use c and f to scroll forward and back through the solutions. · You can also press E while a solution is displayed to cycle through all of the other available solutions. Pressing E while the final solution is displayed will return to the coefficient editor screen. · To exit the solution screen and return to the coefficient editor screen, press J. · The display format of the solutions depends on the setup's display format settings and complex number display format settings. Statistical Calculations (SD/REG) Perform statistical calculations in the SD Mode or REG Mode. The SD Mode is for singlevariable statistical calculations, while the REG Mode is for paired-variable regression calculations (linear, quadratic, logarithmic, e exponential, ab exponential, power, inverse). k Statistical Sample Data Except for the number of variables, the procedure for inputting sample data is the same for both the SD Mode and the REG Mode. Use the STAT editor list screen to input sample data. SD Mode STAT editor REG Mode STAT editor The applicable STAT editor screen appears first whenever you enter the SD Mode (, 3) or REG Mode (, 4). A Sample Data Input Methods You can input sample data either with statistical frequency turned on (FreqOn) or off (FreqOff). The calculator's initial default setting is FreqOff. You can select the input method you want to use with the setup screen statistical frequency setting (page 13). The STAT editor screens include a FREQ column when statistical frequency is turned on (FreqOn). There is no FREQ column when statistical frequency is turned off (FreqOff). E-72 A Inputting Sample Data The following example shows how to input the following sample data in the SD Mode. Class Value (X) 24. 5 25. 5 26. 5 Enter the SD Mode: N3(SD) Frequency (FREQ) 4 6 2 Input the class values in the X column: 24. 5E25. 5E26. 5E The initial default for all frequencies is 1. Move the cursor to the top cell of the FREQ column: ce Input the frequency values in the FREQ column: 4E6E2E The only difference when inputting sample data in the REG Mode is that the STAT editor screen has three columns named X, Y, and FREQ. Note · In the SD Mode, one set of sample data consists of an X value and FREQ value, while one set of REG Mode sample data consists of an X value, Y value, and FREQ value. [. . . ] (5) Press N to display the calculation mode menu, and select the appropriate calculation mode for the type of calculation you want to perform. 4 Press the P button on the back of the calculator with a thin, pointed object to initialize the calculator. If you perform this procedure correctly, the calculator will return to the state it was in the last time you turned it off. P P button 5 If step 4 does not restore normal operation, initialize all modes and settings by pressing Nc3(SYSTEM)3(Reset All)E(Yes). · For details, see "To reset the calculator to initial defaults" (page 1). Important! · Calculation history data, memory data, statistical calculation sample data, program data, and all other input data is deleted. k Lower Battery Indicator The message shown below appears when battery power goes low. [. . . ]