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Re: Ask Mathematica to sub for a long expression

• To: mathgroup at smc.vnet.net
• Subject: [mg71906] Re: Ask Mathematica to sub for a long expression
• From: aaronfude at gmail.com
• Date: Sun, 3 Dec 2006 06:26:23 -0500 (EST)
• References: <ekp4o4$2fq$1@smc.vnet.net><ekrkia$s72$1@smc.vnet.net>

Hi,

Thanks for all the responses. It doesn't quite work for me, but maybe
with a little extra expertise it will. The problem is that that pattern
is not always obvious w/o extra algebra. The basic problem is
summarized in the fact that the following doesn't work the way I'd like
it to:

-a-b/.a+b->c

2a+2b/.a+b->c

Many thanks in advance!

Aaron Fude

• Follow-Ups:
  • Re: Re: Ask Mathematica to sub for a long expression
    • From: Andrzej Kozlowski <akoz@mimuw.edu.pl>