Updates:
Labels: WrongResult
Comment #1 on issue 2027 by asmeurer: Mul.flatten violates power rules
http://code.google.com/p/sympy/issues/detail?id=2027
Maple leaves both variants alone by default.
(-2)**x*(-3)**x;
x x
(-2) (-3)
2**x*3**x;
x x
2 3
simplify((-2)**x*(-3)**x);
(2 x) x x
(-1) 2 3
So I guess you are right, except apparently it is safe to convert
(-1)**x**2 to (-1)**(2*x). By the way, any idea what the exact assumptions
combinations for the bases and exponents can be for this to be valid?
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