Qubic solver

Programs that solve ax^2+bx+c=0 are commonly seen beceause a simple formula exists for this problem:
x = (-b +/- Sqrt(bb-4ac)/(2a).

Such formula also exists for a polynomal of third degree: ax^3+bx^2+cx+d=0. I won't include any information on how this formula is obtained, but if you'd like i could show you.
For it to work you need your calculator set to accept complex numbers (set a+bi using the mode button), even when you are sure that only real solutions exist!

Use the program in any way you like.

Greets, Arno


Email ArnoKret@hotmail.com