Calculator programs · Number and Algebra
Cubic equations in one go
One real root of ax³ + bx² + cx + d = 0 by Newton's method, then the quotient and its two roots: all three roots with no root given.
Number and Algebra
When it helps
P1 of the Algebra calculator in the two-calculator pack. Cubics and the factor theorem appear in 13 of the last 14 years. On Paper 1 you still show the factor; the program finds which one to try.
At each prompt
- a, the coefficient of x³ (0 for a quadratic), b, the coefficient of x², c, the coefficient of x, d, the constant term
- Size
- 205 bytes
- Keying in
- about 10–16 min to key in (380 presses)
- Run mode
- COMP
- Memories it overwrites
- A, B, C, D, X, Y