On Tue, Sep 06, 2005 at 08:36:49PM +0200, Roland Winkler wrote: > Neon Absentius <[EMAIL PROTECTED]> writes: > > Ideally the multiplication should not be assumed commutative (or the > > variables invertible) unless explicitly declared so. > > Emacs calc (the way I look at it) is designed to be a powerful, > advanced calculator. But it is not a computer algebra system which I > would use to address the kind of problem you are talking about.. >
If there is a line between an advanced desk calculator and a CAS then surely Emacs calc has crossed it! OTOH what are PC's but (glorified) advanced desk calculators? :) But (more) seriously what I am talking about is not really that more complicated than what calc does already. If it can calculate 2 2 2 (x + y) = x + 2 y x + y then it should be able to do 2 2 2 (x + y) = x + x y + y x + y > For example. take a look at Maxima, http://www.ma.utexas.edu/maxima.html. > It's now under GPL, and it even has a nice emacs interface. Yes I know about maxima and I use it. However I usually prefer calc for a "quick and dirty" calculation. And I really like the interface. -- Most precious among the relics remaining of Peter's skeleton in the Vatican are 29 fragments of one of his skulls. (St. Peter's other skull is preserved in a reliquary at the Cathedral of St. John Lateran.) -- Frank R. Zindler, "Of Bones and Boners" _______________________________________________ Help-gnu-emacs mailing list Help-gnu-emacs@gnu.org http://lists.gnu.org/mailman/listinfo/help-gnu-emacs