   Chapter 4.4, Problem 9E

Chapter
Section
Textbook Problem

# Find the general indefinite integral. ∫ ( u + 4 ) ( 2 u + 1 )   d u

To determine

To find:

(u+4)(2u+1)du

Explanation

1)  Concept:

Apply the formula of indefinite integral and simplify.

2) Formula:

xndx=xn+1n+1+C

3) Calculation:

Consider,

(u+4)(2u+1)du

The integral can be rewritten as

(u+4)(2u+1)du=2u2+u+8u+4du)

=2u2 du+9u

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