(%i1) assume(notequal(y,0))$ (%i2) conjugate(log(-1 + %i*y)); (%o2) conjugate(log(%i*y-1))
Since y # 0, -1 + %i * y isn't on the negative real axis. So conjugate should commute with log. (This is mostly a feature request, not a bug.)
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fixed by conjugate cvs revision 1.9
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user_id=895922
Originator: YES
fixed by conjugate cvs revision 1.9