Re: extracting function from the list
- To: mathgroup at smc.vnet.net
- Subject: [mg48001] Re: extracting function from the list
- From: Bill Rowe <readnewsciv at earthlink.net>
- Date: Wed, 5 May 2004 08:11:06 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
On 5/4/04 at 1:08 AM, lobachev at hawaii.edu (edgar) wrote:
>I can not seem to figure out how to extract a function from the
>list. for example: mathematica gives me output: {{v->x^2}}
>How do I extract just x^2 out of that list and assign it to a
>different variable?
You need to use the replace operator "/." as in
y = First[v/.{{v->x^2}}]
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