Re: How build a ?TestFuntion that applied to a list gives only the elements that are function of x
- To: mathgroup at smc.vnet.net
- Subject: [mg33009] Re: How build a ?TestFuntion that applied to a list gives only the elements that are function of x
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Tue, 26 Feb 2002 04:34:48 -0500 (EST)
- Organization: Universitaet Leipzig
- References: <a57hmf$2l4$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
what's wrong with :
Select[{Sin[a x], b x, t, c r}, ! FreeQ[#, x] &]
that you need a rule and a relacement ?
Regards
Jens
"J. Guillermo Sanchez" wrote:
>
> How build a ?TestFuntion that applied to a list give only the elements
> that are function of x
>
> Example:
>
> In[]:= {Sin[a x], b x, t, c r}/.?TestFuntion
>
> gives
>
> Out[] = {Sin[a x], b x}
>
> Thanks
>
> Guillermo Sanchez