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How to pick all terms which have are multiplied with a factor, e.g., 2

• To: mathgroup at smc.vnet.net
• Subject: [mg35463] How to pick all terms which have are multiplied with a factor, e.g., 2
• From: "Matthias G. Imhof" <mgi at vt.edu>
• Date: Sat, 13 Jul 2002 03:49:07 -0400 (EDT)
• Organization: Virginia Tech
• Sender: owner-wri-mathgroup at wolfram.com

I would like to simplify a large symbolic summation. I know that terms which 
are multiplied with a common integer factor can ultimately be combined and 
simplified.

As an example: from the sum

	2 a b^2 c^3 + 13 x y a b + 2 d^-1

I would like to pick 2 a b^2 c^3 + 2 d^-1 to combine them; and similarly for 
other common integer factors. I suspect that patterns would help, but I did 
not manage to devise a correct one.

Matthias

• Follow-Ups:
  • Re: How to pick all terms which have are multiplied with a factor, e.g., 2
    • From: Tomas Garza <tgarza01@prodigy.net.mx>