**Quadratic Formula**

Ax² + Bx + C = 0

Where x = (-B ± √(B² - 4AC)) / (2A)

This is just the popular quadratic formula, except this set of programs allow for complex A, B, and C. (Unlike the Solver applications).

Example:

A = 2 - i

B = -6

C = 14i

x1 ≈ -0.9873 + 1.551i

x2 ≈ 3.3873 - 0.3509i

Casio Prizm:

QUADSLV

Quadratic Equation - Complex Coefficients Allowed

11/23/2012 - 124 bytes

a+bi

"AX²+BX+C=0"

"A"? → A

"B?"→ B

"C?"→ C

√(B²-4AC) → X

(-B - X) ÷ (2A)→ R

(-B + X) ÷ (2A) → S

"X=R Or X=S"

R ◢

S

TI-84+:

QUADSLV

Quadratic Formula - Allows for Complex Coefficients

Ax^2 + Bx + C = 0

a+bi

Disp "AX²+BX+C"

Prompt A,B,C

√(B²-4AC) → X

(-B - X)/(2A) → R

(-B + X)/(2A) → S

Disp "X=R or X=S"

Pause R

Pause S

HP 39gii:

Use the POLYROOT command. POLYROOT([A,B,C])

The vector can represent any polynomial.

This blog is property of Edward Shore. 2012

## No comments:

## Post a Comment