If you want to see a possible design that is fairly complete, look at the
documentation for Mathematica's Nintegrate. (free, online).
You might not agree with what is done there, but it should give you an idea
from the perspective of one fairly complete setup.
RJF
> -----Original Message-----
> From: maxima-bounces at math.utexas.edu
> [mailto:maxima-bounces at math.utexas.edu] On Behalf Of Andrej Vodopivec
> Sent: Friday, May 25, 2007 3:13 AM
> To: Barton Willis
> Cc: Maxima - list
> Subject: Re: [Maxima] nintegrate - second attempt