(11C) CUBIC EQUATION

[Valentin Albillo]

(06-10-2018 07:15 AM)Dieter Wrote:  So it can't be the discriminant of the original cubic equation (here D<0 means three real roots). But it looks like it's indeed some discriminant of a reduced quadratic.

Great insight on your part but that's exactly what I said in the very next paragraph of my previous post, which you choose not to quote for whatever reasons. I'll save you the trouble, here you are:

Valentin Albillo Wrote:I'd bet it's the discriminant of the deflated quadratic, i.e., the equivalent of b^2-4*a*c in the classical formula for the roots of a quadratic equation (not the a,b,c he uses in his instructions).

Also, I don't appreciate your attitude towards Gamo. It's great that you're helping him refine his program and correct the perceived programming errors to try and get a working program, very nice of you, but in my opinion you're doing it in a condescending, patronizing way which is completely out of place. Surely you can help him without that much smugness on your part.

There.
V.
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