Calculus 10th Edition

Published by Brooks Cole
ISBN 10: 1-28505-709-0
ISBN 13: 978-1-28505-709-5

Chapter 13 - Functions of Several Variables - 13.2 Exercises - Page 887: 22

Answer

The limit is $$\lim_{(x,y,z)\to(-2,1,0)}xe^{yz}=-2.$$ The function is continuous everywhere.

Work Step by Step

Calculate this limit by substitution: $$\lim_{(x,y,z)\to(-2,1,0)}xe^{yz}=-2e^{1\cdot0}=-2e^{0}=-2.$$ This function is continuous everywhere because at every point $(x_0,y_0,z_0)$ we can by substitution get $$\lim_{(x,y,z)\to(x_0,y_0,z_0)}xe^{yz}=x_0e^{y_0z_0}.$$
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