Answer
See details below.
Work Step by Step
We do not need to use the quotient rule because the bottom function does not depend on $ x $. But we can apply the quotient rule to compute $\frac{\partial}{\partial y}\left(\frac{x+y}{y+1}\right)$.
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 - 15.3 Partial Derivatives - Preliminary Questions - Page 780: 2
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