Answer
The solution set is $(-c,c)$.
Work Step by Step
Since $|u|\lt c$, then we have
$$-c\lt u\lt c.$$
Since $c\gt 0$, then the solution set is $(-c,c)$.
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 4 - Section 4.3 - Equations and Inequalities Involving Absolute Value - Exercise Set - Page 285: 101
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