Quadratic Equations That Produce Multiple Root (1 Or 2) Solutions Or Imaginary Number Solutions - Casio fx9750G User Manual

• 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
Input for coefficient
• 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 k k k 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.
u u u u u To solve a cubic equation that produces a multiple-value solution
Example To solve the following cubic equation:
x x
3 – 4
bw-ewfw-cw
1(SOLV)
Quadratic and Cubic Equations
→ coefficient
b
d
is required only for cubic equations.
5x
2 + – 2 = 0
→ coefficient
c d
Highlighted solution cell value
7 - 3
121