[kde-edu]: [KDE-EDU] KMathTool, Finding roots of Cubic polynomial

[Dominique Devriese]

Roberto Moriyon writes:

> Hi, in http://www.chez.com/sereinarts/ax3bx2cxd.html there is an
> algorithm written in C that is suposed to solve the general cubic
> equation.

Hi,

Well, yeah, but that algorithm is not as good as the one in
~kig/misc/kignumerics.cpp, because it uses the direct algebraic
formula, and not the numeric approximation process that Maurizio was
talking about ( he's a professor in numerical analysis, the science
that handles these things, you know :) )...

cheers
domi