### Home > APCALC > Chapter 7 > Lesson 7.4.4 > Problem 7-221

7-221.

**Multiple Choice: **

First use -substitution:

Then use integration by parts:

Let and

*.*

Then

*__________ and*

*____________.*

7-221.

**Multiple Choice: **

First use -substitution:

Then use integration by parts:

Let and

Then