Answer
$2b^{2}$
Work Step by Step
We know that $\int^{b}_{0}xdx= \frac{b^{2}}{2}$
Then, $4\int^{b}_{0}xdx= 4\times\frac{b^{2}}{2}= 2b^{2}$
University Calculus: Early Transcendentals (3rd Edition)
by Hass, Joel R.; Weir, Maurice D.; Thomas Jr., George B.
Published by
Pearson
ISBN 10:
0321999584
ISBN 13:
978-0-32199-958-0
Chapter 5 - Section 5.3 - The Definite Integral - Exercises - Page 309: 24
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