In SymPy 0.7.6 as well as the git master for me it immediately gives nan (which I guess is a bug).
Aaron Meurer On Sat, Feb 7, 2015 at 4:06 PM, Sten Sogaard <sten.soga...@gmail.com> wrote: > I am trying to use inverse_laplace_transformation for some relative simple > filter calculations. > > I works fine with very simple 1st and 2nd order filters, but if it is more > complex it takes forever. > > Even this very simple polynomial takes a long time (30 minutes and still > no solution). > > from sympy import * > from sympy.abc import s,t > > H = 1/(0.07071*s**2 + 258.0*s + 1100000.) > inverse_laplace_transform(1/s*H,s,t) > > > Any ideas? > > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/bb31e487-58e6-48cc-b682-3e62ae660224%40googlegroups.com > <https://groups.google.com/d/msgid/sympy/bb31e487-58e6-48cc-b682-3e62ae660224%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAKgW%3D6KJhy36ZHJhf8gNLiqkunAEz%2BtsmRssvu4f74p_iLQ28w%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
