Updates:
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Owner: [email protected]
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Labels: NeedsReview
Comment #4 on issue 2662 by [email protected]: conjugate(x).diff(x) is
wrong
http://code.google.com/p/sympy/issues/detail?id=2662
A lot of the code assumes that derivatives are taken with respect to a real
x instead of a complex x. This is fixed in
https://github.com/sympy/sympy/pull/1271
By the way I fixed the derivative of sign(x), apparently without bad side
effects (looks like there are no tests for integrating functions with
sign(x) in them).
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