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

9-110.

Examine the integrals below. Consider the multiple tools available for integrating and use the best strategy. After evaluating each integral, write a short description of your method. Homework Help ✎

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.