Updates:
Status: Fixed
Comment #3 on issue 626 by hazelnusse: solve fails when solving for
f(x).diff(x)
http://code.google.com/p/sympy/issues/detail?id=626
Ondrej,
I think the patches I've attache fix this problem. This is the behavior
I get:
>>> x = Symbol('x')
>>> f = Function('f')
>>> F = x**2 + f(x)**2 - 4*x - 1
>>> solve(F.diff(x), diff(f(x), x))
[(2 - x)/f(x)]
Let me know if the patches look ok. There are two because the first one I
didn't
implement the code correctly to deal with sets, and I didn't have tests for
the above
case.
Attachments:
0001-Implemented-code-to-allow-for-solving-for-Function-a.patch 5.0 KB
0001-More-functionality-to-allow-solve-to-work-with-sets.patch 1.9 KB
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