#### Answer

a) $(1;5)$
b) $(-\infty;1)$ & $(5;\infty)$

#### Work Step by Step

Step 1: Find critical points where $h'(x)=0$
Step 2: If $h'(x)$ is positive, the function is increasing
Step 3: If $h'(x)$ is negative, the function is decreasing

Published by
Pearson

ISBN 10:
0321749006

ISBN 13:
978-0-32174-900-0

a) $(1;5)$
b) $(-\infty;1)$ & $(5;\infty)$

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