### Home > CALC > Chapter 7 > Lesson 7.4.4 > Problem 7-210

7-210.

First use *u*-Sub:

Then use integration by parts:

Let *f*(*x*) = 2*U* and *dg* = cos(*U*)*dU*

Find *df* = __________ and *g*(*x*) = ____________.

7-210.

First use *u*-Sub:

Then use integration by parts:

Let *f*(*x*) = 2*U* and *dg* = cos(*U*)*dU*

Find *df* = __________ and *g*(*x*) = ____________.