Answer
$e^2$
Work Step by Step
Since we have $f(u,v)=rse^{r+s}$, then at $r=1$ and $s=1$, we have:
$$f(u,v)=(1)(1)e^{1+1}=e^2.$$
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 15 - Differentiation in Several Variables - 15.6 The Chain Rule - Preliminary Questions - Page 808: 3
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