Updates:
Summary: log should not expand(1/x) (was "expand log can be more complete"
and "logcombine can be less strict")
Comment #6 on issue 2043 by smichr: log should not expand(1/x) (was "expand
log can be more complete" and "logcombine can be less strict")
http://code.google.com/p/sympy/issues/detail?id=2043
log(1/x) should not expand to -log(x). This behavior was removed and an
assumption given to x for the sole test that failed because of this
allowance. Now the base must be positive and power real for log(b**p) ->
p*log(b).
This is commit 2043 in my t2 branch at github/smichr
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