Re: counting number of variables in an expression
- To: mathgroup at smc.vnet.net
- Subject: [mg108636] Re: counting number of variables in an expression
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Thu, 25 Mar 2010 06:08:58 -0500 (EST)
- Reply-to: hanlonr at cox.net
Variables[(x + y)^2 + 3 z^2 - y z + 7]
{x,y,z}
% // Length
3
Bob Hanlon
---- Rob <schabertrobbinger at gmail.com> wrote:
=============
Is there a straightforward way to count the number of variables in an
expression? If it makes any difference what I'm looking at is the
product of several polynomials in many variables with rational
coefficients.