Comment #1 on issue 1429 by asmeurer: matches fails to match differential
equation
http://code.google.com/p/sympy/issues/detail?id=1429
I figured it out. I has to do with x - (x - f(x))*diff(f(x), x) staying as
it is, but -(x - f(x))*diff(f(x), x) becoming
(f(x) - x)*diff(f(x), x).
This is a preliminary patch. It calls expand in matches, but I (and
Ondrej) think we should fix
Add._combine_inverse to be more smart about these things.
Attachments:
0001-Preliminary-fix-for-issue-1429.patch 861 bytes
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