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vincenzo
06/19/07 09:53am

Suppose you have a function of one variable $r$:

f[r]

Its first derivative can be computed using, for example,

D[f[r],r]

Now, we want to change the variable $r$ such that

r[u_,v_]:=u+v.

How could I compute the following thing

D[f[u+v],u+v]???

Thanks!

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Subject (listing for 'differentiation after changing variables')
Author Date Posted
differentiation after changing variables vincenzo 06/19/07 09:53am
Re: differentiation after changing variables Peter Pein 06/24/07 11:14pm
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