Re: re-grouping expressions in mathematica
- To: mathgroup at smc.vnet.net
- Subject: [mg102992] Re: re-grouping expressions in mathematica
- From: Szabolcs Horvát <szhorvat at gmail.com>
- Date: Thu, 3 Sep 2009 07:11:34 -0400 (EDT)
- References: <h7o2hm$k22$1@smc.vnet.net>
On 2009.09.03. 11:33, Peter Schreiber wrote:
> Hi guys,
> How can I tell mathematica to re-write following expression q1 in the form of q2?
>
> q1=3(2+4a+5b)+5(a-0.4b)
>
>
> q2=(...)a + (...)b
>
Use Collect:
Collect[3 (2 + 4 a + 5 b) + 5 (a - 0.4 b), {a, b}]