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Re: Replace certain variable

  • To: mathgroup at
  • Subject: [mg74833] Re: Replace certain variable
  • From: jesse.woodroffe at
  • Date: Sat, 7 Apr 2007 04:03:45 -0400 (EDT)
  • References: <ev51a7$a63$>

Although I suspect there may be even cleaner ways to do it, you could
use a replacement rule such as


This rule works for any sequence of multiplications in the exponent,
so long as w is somewhere and there actually IS a multiplication, i.e.
it doesn't work for w alone. To remedy that situtation, you could also
include a specific replacement for Exp[w],


This being said, I'd guess that there's a way that would get both
cases at once.

Jesse Woodroffe

On Apr 6, 3:44 am, "KFUPM" <hussain.alqaht... at> wrote:
> Dear Group
> If i have a term like : F[w]*Exp[I*w*t] where F[w] is an arbitrary
> function, and i want to replace w by x+ s*a only in the exponent not
> in F[w], i wonder what is the quickest and easiest way to do it
> provided that i have so many similar terms.
> Your help and prompt reply is highly appreciated.

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