I also made the (f* x y) ---> (* x y) change. It fixes the invert bug
for XP with
Maxima version: 5.9.0.9beta1
Maxima build date: 12:59 7/13/2004
host type: i686-pc-mingw32
lisp-implementation-type: Kyoto Common Lisp
lisp-implementation-version: GCL 2.7.0
Barton