Casio CFX-9970G Manuale - Pagina 6

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7-3 Quadratic and Cubic Equations

This calculator can also solve quadratic and cubic equations that match the

following formats (when

k k k k k Specifying the Degree of an Equation

While in the Equation Mode, press 2 (POLY) and then specify the degree of the

equation.

k k k k k Solving a Quadratic or Cubic Equation

1. Press 2 (3) to enter the Cubic Equation Mode.

2. Input each coefficient.

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

• Quadratic:

• Cubic:

• {2}/{3} ... {quadratic}/{cubic} equation

Example

To solve the following cubic equation:

– 2

bw-cw-bwcw

• 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

Input for coefficient

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

G G G G G

0):

= 0

–

+ 2 = 0

coefficient

is required only for cubic equations.

coefficient

Highlighted solution cell value

104