Status: Started
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 3269 by [email protected]: powsimp breaks power rules
http://code.google.com/p/sympy/issues/detail?id=3269
var('a b c',imaginary=True)
(a, b, c)
eq=sqrt(a)*sqrt(b)*sqrt(c)
powsimp(eq).subs({a:I,b:I,c:I}) == (eq).subs({a:I,b:I,c:I})
False
(This stems from a logical error: if is_negative is False this does not
imply that nonnegative is True.)
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