Calculus (3rd Edition)

Published by W. H. Freeman

Chapter 15 - Differentiation in Several Variables - 15.2 Limits and Continuity in Several Variables - Preliminary Questions - Page 771: 1

Answer

$D(P,r)$ is the disk centered at $P$ but $D^*(P,r)$ is the punctured disk which does not include $P$.

Work Step by Step

Given above.

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