Comment #14 on issue 2081 by smi...@gmail.com: Pow substitution introduces wrong answers
http://code.google.com/p/sympy/issues/detail?id=2081
All the tests pass there. But it seems that exp should never be invalid b/c the base is positive so exp(x)**y = exp(x*y) = exp(y)**x.
-- You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to sympy-issues@googlegroups.com. To unsubscribe from this group, send email to sympy-issues+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en.
