### Home > CALC > Chapter 9 > Lesson 9.4.1 > Problem 9-110

9-110.

Use substitution. Let *u* = –cos(*x*).

This integral can be evaluated by sketching the graph and using geometry.

Use integration by parts.

Let *f* = *x*^{2} and *dg* = *e*^{4}* ^{x}*.

Use substitution. Let *u* = *x*^{2} + 4.