Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 15 - Differentiation in Several Variables - 15.1 Functions of Two or More Variables - Preliminary Questions - Page 763: 1

Answer

$f(2,2) = 18$. $f(-1,4) =-5$.

Work Step by Step

We are given the function: $f(x,y)=x+yx^3$ We plug in the points to find the function values: $f(2,2) = 2+ 2(2)^3= 2+ 2(8) = 2+116=18$. $f(-1,4) = -1+ 4(-1)^3= -1+ 4(-1) = -1 -4= -5$.
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