>>>>> "Henry" == Henry Baker <hbaker1 at pipeline.com> writes:
Henry> assume(x>0);
Henry> How come
Henry> abs(sinh(x)) => sinh(x)
Henry> but
Henry> abs(asinh(x)) => abs(asinh(x)) SHOULD BE asinh(x)
Henry> ???
Henry> asinh(x) is a perfectly good 1-1/onto real increasing odd
Henry> function of x.
Exactly, but no one told maxima that fact. :-)
This will be fixed soon. Maxima also didn't know that atanh is an
increasing odd function either. Not sure what to do about acosh since
the real-valued function is only defined for non-negative x, so maxima
doesn't know that abs(acosh(x)) = acosh(x) for x>=0.
Ray