| Author |
Comment/Response |
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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