Thomas' Calculus 13th Edition

Published by Pearson
ISBN 10: 0-32187-896-5
ISBN 13: 978-0-32187-896-0

Appendices - Section A.1 - Real Numbers and the Real Line - Exercises A.1 - Page AP-6: 7


Solution set = $\{-3,3\}$

Work Step by Step

Use properties from the table 'Absolute Values and Intervals". Here: property 5: $\quad |x|=a \Leftrightarrow x=\pm a,\ \quad $ which holds for any positive number a. Thus: $y=\pm 3$
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