Status: Accepted
Owner: smichr
Labels: Type-Defect Priority-Medium
New issue 2043 by smichr: logcombine can be less strict
http://code.google.com/p/sympy/issues/detail?id=2043
logcombine only combines a coefficient to a log if the coefficient is real,
but it appears that it is true for imaginary coefficients, too:
N((I+2)*log(3))
2.19722457733622 + 1.09861228866811*I
log(3**(2+I)).n()
2.19722457733622 + 1.09861228866811*I
So x*log(pos) -> log(pos**x) seems to be the more general rule unless I am
missing a special case.
This would allow 2*x*log(2) to combine to log(2**(2*x)).
The hint to logcombine, assume_pos_real, could be changed to assume_pos.
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