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Thomas Klemm · 08-11-2018, 10:34 AM

(03-22-2018 10:18 AM)Dieter Wrote: BTW, for those who want to try more sophisticated quadratic equation solvers: take a look at the HP15C Advanced Functions Handbook (appendix, "Example 6 continued"). It includes a special version of such a program that shows how the limitations of the standard methods can be overcome. However, note that this solves ax²–2bx+c=0.

Cf. Solve the real quadratic equation \(c-2bz+az^2=0\) for real or complex roots.