>> I disagree that Maxima is trustworthy. There are little bugs here
and there. More than I have time to report or annotate.<<
You should report them.
I have not used a commercial CAS in 6 months. I work with mathematical
equations for a living... if Maxima was not trustworthy, I would not dare
rely on it the way I do.
Maxima *is* reliable despite a few bugs.
Plus, if people only report the bugs they find, the number of bugs will go
down exponentially...