maxima is more than 500 times slower than maple



> Hi!
> I guess you were running it on something like clisp compiled maxima.
No, i am using sbcl.
$ maxima
Maxima 5.30.0 http://maxima.sourceforge.net
using Lisp SBCL 1.0.40.0.debian

> My guess is that you are doing a vastly different computation, perhaps 
> repeating unnecessary simplifications,
> in your Maxima specifications.
I am doing THE SAME computations in maxima an maple, the programs are 
identical.

> A way to do substitutions fast may be to define functions and then 
> bind parameters. 
I believe that substitutions are not a problem.  The problem is a last 
simplification that must simplify expression to zero.