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Re: Replace certain variable


On Apr 6, 2007, at 4:25 AM, KFUPM 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.

I would change all the F[w] to something else, then change w, then  
restore F[w] eg:

F[w] Exp[I w t]/.F[w]->c/.w->x+s a/.c->F[w]

Regards,

Ssezi


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