[wp34s] Poly root finders?

[Thomas Klemm]

If you only want to calculate roots of real polynomials you could use Bairstow's method. The algorithm finds the roots in complex conjugate pairs using only real arithmetic.

It should be straight forward to translate this program for the HP-11C to the WP-34S. However the trick using L.R. to solve the linear equation probably doesn't work. You could use Cramer's rule instead.

But then of course it doesn't help to solve: \(z^2+1=0\)

Kind regards
Thomas