On Sex, 2009-04-17 at 15:23 -0400, George Leeman wrote: > I can clearly see this function at the beginning of the file You're right, this function exists but it's not documented. That's a bug. (%i7) poly_discriminant(A^3+3*A^2-13*A-38,A); (%o7) 2101 Regards, Jaime