Subject: maxima is more than 500 times slower than maple
From: Richard Fateman
Date: Wed, 24 Apr 2013 09:48:31 -0700
My guess is that you are doing a vastly different computation, perhaps
repeating unnecessary simplifications,
in your Maxima specifications. Nevertheless, the Maple computation
would ordinarily be somewhat faster.
I'm not sure what you wish to accomplish by expand() or ratsimp.
For example, expand((a+b+c+d)^30) takes 0.83 seconds but
rat((a+b+c+d)^30) takes 0.05 seconds.
I think that Valery Pipin's response excludes the (commented out)
long-running command at the end.
A way to do substitutions fast may be to define functions and then bind
parameters.
eg.
form(x,y,z):= .....
then
form(a,b,c) + form (c,a,b) + ....
RJF