I guess it's just not implemented. I think the solution should be log(120)/log(S(21)/20)/12. This is related to this issue https://github.com/sympy/sympy/issues/2999.
Aaron Meurer On Fri, Jun 5, 2015 at 10:56 AM, Paul Royik <distantjob...@gmail.com> wrote: > Hello. > > Why solve(-(21/20)**(12*x) + 120, x) gives empty set? > > -- > 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/f21f4f8b-aecd-48d1-a738-6bb23ef1058b%40googlegroups.com. > 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%3D6JcsToXyyJvgddkSbh-1DzBa0vBkh8k1_e23QWY8-RVWA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
