Re: Free variables in an expression
- To: mathgroup at smc.vnet.net
- Subject: [mg54794] Re: [mg54758] Free variables in an expression
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Wed, 2 Mar 2005 01:26:41 -0500 (EST)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
expr=Log[6x]+y/3-Exp[z]*Pi-3*I;
Cases[expr, _Symbol?(!NumericQ[#]&),Infinity]
{z,y,x}
Bob Hanlon
>
> From: Sascha Kratky <notvalid at notvalid.com>
To: mathgroup at smc.vnet.net
> Date: 2005/03/01 Tue AM 01:58:13 EST
> To: mathgroup at smc.vnet.net
> Subject: [mg54794] [mg54758] Free variables in an expression
>
> Is there a Mathematica built-in function that gives a list of free
> (unbound) variables in an arbitrary expression?
>
> Thanks,
> Sascha
>
>
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