sympy/sympy — pull request #656 by smichr (2011-10-14 05:20:06+00:00)
Title: add more patterns; handle f(x)**g(x); try factoring

These modifications handle several more equations that failed previously:

http://code.google.com/p/sympy/issues/detail?id=1364
http://code.google.com/p/sympy/issues/detail?id=1172 (@vinzent)