Updates:
Cc: ondrej.certik
Comment #15 on issue 1219 by fabian.seoane: .coeff() fails for -x/8 + x*y
http://code.google.com/p/sympy/issues/detail?id=1219
I think this patch fixes it. Still a couple of things:
- there must be a better way to know if an expression is multiplied by a
constant
than x.as_coeff_terms()[0]
- calling collect for this is to overkill. collects does a lot of work
that is
irrelevant for coeff. However, collect is similar to coeff in many ways, so
I propose
to implement coeff using the helper methods of coeff in sympy.simplify
(this should
be rather easy).
Attachments:
0001-Solve-.coeff-fails-for-x-8-x-y.patch 1.9 KB
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