Status: Accepted
Owner: [email protected]
Labels: Type-Defect Priority-Medium
New issue 2323 by [email protected]: old is_zero assumption for log is broken
http://code.google.com/p/sympy/issues/detail?id=2323
>>> log(x).is_zero
False
This should be None. It is returning whether the argument is zero. It
should only give a definite answer if the arg is a number.
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