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MathGroup Archive 1999

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Variables[] in general expressions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg20024] Variables[] in general expressions
  • From: Ken Rice <kmr1004 at hermes.cam.ac.uk>
  • Date: Sat, 25 Sep 1999 02:40:48 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

Hi there,

Is there any way of extracting a list of variables from a general
expression, not just a polynomial? I want something which will do,
e.g.

In	AllVariables[y + Exp[x]]
Out	{y,x}

Apologies if I'm just being dim.

Ken Rice
_____________________________________________________
Kenneth Rice
Churchill College
Cambridge
CB3 0DS, UK
E-mail: kmr1004 at cam.ac.uk



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