-----maxima-bounces at math.utexas.edu wrote: -----
>Too?often,?I'm?getting?a?"quotient?is?not?exact"?error?from?algsys.?The
>resultant function?seems?to?be?the?troublemaker.
I don't know the details of the various resultant algorithms, but I
think the errors are due to expressions that vanish but do not
simplify to zero. We could squeeze in a super slow emergency backup
resultant that computes the determinant (ick) of the Sylvester_matrix.
Depending on the determinant algorithm, this method would handle
polynomials with arbitrary coefficients, I think.
My code was getting into trouble mostly because I used a trick that
sometimes (often) made it super-fast, but in general caused trouble.
Barton