Casio fx-9750G Equation Calculations Instrukcja Użytkownika Pobierz pdf (Strona 7)

121

• Each time you press w, the input value is registered in the highlighted cell. Each

press of w inputs values in the following sequence:

coefficient

a → coefficient b → coefficient c → coefficient d

Input for coefficient d is required only for cubic equations.

• You can input fractions and value memory contents as coefficients.

After inputting the coefficients, press 1 (SOLV) to solve the equations.

1(SOLV)

• Internal calculations are performed using a 15-digit mantissa, but results are dis-

played using a 10-digit mantissa and 2-digit exponent.

• An “Ma ERROR” occurs whenever the unit is unable to solve the equations.

• Pressing 1 (REPT) returns to the initial display of the Cubic Equation Mode.

k Quadratic equations that produce multiple root (1 or 2)

solutions or imaginary number solutions

The following examples illustrate how multiple-root solutions and imaginary number

solutions are handled.

uTo solve a cubic equation that produces a multiple-value solution

Example To solve the following cubic equation:

– 4x

+ 5x – 2 = 0

bw-ewfw-cw

1(SOLV)

Quadratic and Cubic Equations 7 - 3

Highlighted solution cell value

1 2 3 4 5 6 7 8 9

Brak uwag

Casio fx-9750G Equation Calculations Instrukcja Użytkownika Strona 7