>> > However we can only extract explicit values here ... >> > Even simplest constants are not supported yet: >> > >> > RootOf(x**3-a, 1) >> >> Actually it works, you just need to be precise about the polynomial >> you are working with (Poly(x**3-a, x)) > > > That only works because it can explicitly find the roots. If it has to > represent the roots symbolically, it can't do it, because algebraic > functions are not yet supported in any way in the polys. Try for example > RootOf((Poly(x**5-a*x + b, x)), 0).
Sorry, I was unaware of this. I expected that it would return a RootOf instance. Rather it raised "RootOf is not supported over ZZ[a,b]" -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
