Casio FX-100D Manual de usuario descargar pdf (Pagina 12)

FX 115 MS Training guide

Equation Calculations

The EQN mode lets you solve equations of the 2

or 3

degree and simultaneous linear

equations with up to three unknowns. To enter the EQN mode, press the [MODE] key 3 times

and press “1” for EQN.

Quadratic and Cubic Equations

Enter the EQN mode and press the right arrow to display the initial quadratic/cubic

equation screen. Press 2 for quadratic (2

degree of the form ax

+ bx + c = 0) or 3 for

cubic (3

degree of the form ax

+ bx

+ cx + d = 0). You will be prompted to enter

values of each of the coefficients.

• Prior to inputting the final coefficient, you can use the up and down arrow keys to

move between coefficients and make changes.

• You cannot input complex numbers for coefficients.

• As soon as you input a value for the final coefficient, one of the solutions is

displayed.

• Press the down arrow to view other solution(s). You can use the up and down

arrows to scroll between the solutions.

• After displaying the solutions, press [AC] to return to the coefficient input screen.

• If the result is a complex number, the real part of the solution appears. An R-I

symbol will appear on the display. Press [SHIFT] [Re-Im] to toggle the display

between the real part and the imaginary part.

Example: x

+ 7x + 10 (2 real solutions)

+ 2x + 5 (2 complex number solutions)

Simultaneous Equations

Enter the EQN mode and the simultaneous equation screen will be displayed. Press 2

or 3 for the number of unknowns. You will be prompted to enter values of each of the

coefficients.

• Prior to inputting the final coefficient, you can use the up and down arrow keys to

move between coefficients and make changes.

• You cannot input complex numbers for coefficients.

• As soon as you input a value for the final coefficient, one of the solutions is

displayed.

• Press the down arrow to view other solution(s). You can use the up and down

arrows to scroll between the solutions.

• After displaying the solutions, press [AC] to return to the coefficient input screen.

Example: x + 2y = 3 (a1 = 1, b1 = 2, c1 = 3)

-x + 3y + 2 (a2 = -1, b2 = 3, c2 = 2)

References the Casio FX-115 MS User’s Guide Casio FX-115MS Scientific calculator

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Casio FX-100D Manual de usuario Pagina 12

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