Bill Dubuque <firstname.lastname@example.org> writes: >> : Consider f := x^3 - 12*x^2 + 20*x + 59 >> : Using solve(f,x), Maple returns 3 imagionary solutions. This is incorrect >> : since all odd degree polynomials must have at least one real solution. >> Mathematica also returns the imaginaries without simplification, likewise
As another datapoint, MuPAD returns the 3 real roots directly from solve(f,x);
I cannot, however, seem to get MuPAD to plug the values back in and simplify them down to 0, even though they're verifiably numerically 0.