[Date Index] [Thread Index] [Author Index]

Re: Collecting Positive and Negative Terms

• To: mathgroup at smc.vnet.net
• Subject: [mg112302] Re: Collecting Positive and Negative Terms
• From: Michael Knudsen <micknudsen at gmail.com>
• Date: Wed, 8 Sep 2010 00:59:48 -0400 (EDT)
• References: <i45rc9$g2p$1@smc.vnet.net>

On Aug 14, 12:32 pm, Bob Hanlon <hanl... at cox.net> wrote:

> myExpression = a + b - c;
>
> DeleteCases[myExpression, Times[-1, ___]]
>
> a+b

Dammit! I was a little too fast with my reply. For some reason, it
fails when I apply to one of my big expressions. Both postive and
negative terms survive then.

Here is an example of when it goes wrong:

http://commondatastorage.googleapis.com/michael_knudsen_various/SplitExpres=
sion.nb

--
Michael Knudsen