University Calculus: Early Transcendentals (3rd Edition)

Published by Pearson
ISBN 10: 0321999584
ISBN 13: 978-0-32199-958-0

Chapter 13 - Section 13.3 - Partial Derivatives - Exercises - Page 702: 19

Answer

$f_x=y x^{y-1}$ and $f_y=x^{y} \ln (x)$

Work Step by Step

Our aim is to take the first partial derivatives of the given function $f(x,y)$ with respect to $x$, by treating $y$ as a constant, and vice versa: $f_x=\dfrac{\partial }{\partial x} (x^y)=y x^{y-1}$ Our aim is to take the first partial derivatives of the given function $f(x,y)$ with respect to $y$, by treating $x$ as a constant, and vice versa: $f_y=\dfrac{\partial }{\partial y}(x^y) =x^{y} \ln (x)$
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