Thomas' Calculus 13th Edition

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

Chapter 5: Integrals - Section 5.5 - Indefinite Integrals and the Substitution Method - Exercises 5.5 - Page 294: 1

Answer

$\int 2(2x+4)^{4}dx = \frac{(2x+4)^5}{5}$

Work Step by Step

$\int 2(2x+4)^{4}dx \space\space\space\space\space u = 2x+4$ First, we organize the integral $\int (2x+4)^4 2dx$ Now, we find $du$ $\frac{du}{dx}=2(x^{1-1}) + 0$ $du = 2dx$ And we do the substituition $\int (u)^4 du$ To finish, we find the antiderivative of this integral applying the power rule for integrals $\int(u)^4 du = \frac{u^{4+1}}{4+1}$ $\int(u)^4 du = \frac{u^5}{5}$ And now we go back to $x$ $\int 2(2x+4)^{4}dx = \frac{(2x+4)^5}{5}$
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