### Home > CALC > Chapter 9 > Lesson 9.4.1 > Problem9-110

9-110.
1. 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 = x2 and dg = e4x.

Use substitution. Let u = x2 + 4.