Updates:
Summary: ask(x + exp(x), Q.positive, Assume(x, Q.real) returns None
Labels: Assumptions
Comment #10 on issue 1244 by Vinzent.Steinberg: ask(x + exp(x), Q.positive,
Assume(x, Q.real) returns None
http://code.google.com/p/sympy/issues/detail?id=1244
In [20]: (x+exp(x)).is_positive
In [21]: ask(x+exp(x), Q.positive)
In [22]: ask(x+exp(x), Q.positive, Assume(x, Q.real))
In [23]: ask(x+exp(x), Q.positive, Assume(x, Q.real) & Assume(x, Q.nonzero))
In [24]:
So the new assumptions module has to be fixed.
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