Re: replacement x->y except in Exp[x]
- To: mathgroup at smc.vnet.net
- Subject: [mg110849] Re: replacement x->y except in Exp[x]
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Thu, 8 Jul 2010 06:51:08 -0400 (EDT)
- Reply-to: hanlonr at cox.net
expr = a*x + b*x^2 - c*Exp[x];
expr /. {Exp[x] -> z, x -> y} /. z -> Exp[x]
a*y + b*y^2 - c*E^x
Bob Hanlon
---- Sebastian <sebhofer at gmail.com> wrote:
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Is it possible to exclude certain patterns from replacements?
For example I want to replace y for x everywhere except in Exp[x].
TIA Sebastian