Perhaps you should give Float a precision corresponding to eps. Aaron Meurer
On Tue, Jun 18, 2013 at 4:52 PM, smichr <smi...@gmail.com> wrote: > So altogether, finding the real roots might look something like this: > >>>> > ... def rroots(eq, x, eps=None): > ... p = sqf(Poly(eq, x, extension=True).lift()) > ... if p.is_Mul: > ... p = [pi.base if pi.is_Pow else pi for pi in p.args] > ... else: > ... p = [p] > ... intv = flatten([Poly(pi, x).intervals(eps=eps) for pi in p], 1) > ... rv = [] > ... for (a, b), c in intv: > ... try: > ... root = nsolve(eq, x, (a+b)/2, tol=eps) > ... if a <= root <= b: > ... rv.append(Float(root)) > ... except: pass > ... return rv > ... >>>> rroots(eq,x,eps=.1) > [-0.774799299008846, 1.07288890926981] >>>> rroots(eq,x) > [-0.774596691590882, 1.07267042449333] > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sympy+unsubscr...@googlegroups.com. > To post to this group, send email to sympy@googlegroups.com. > Visit this group at http://groups.google.com/group/sympy. > For more options, visit https://groups.google.com/groups/opt_out. > > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
