### Home > CALC > Chapter 8 > Lesson 8.1.1 > Problem 8-8

8-8.

Remember that the integral 'undoes' the derivative.But notice that you are integrating as a final step: don't forget +*C*.

Recall that *e*^{4}^{x}^{ + 2} = *e*^{2}*e*^{4}* ^{x}* and

*e*

^{2}is a constant.

Before integrating, rewrite the integrand so it is not a fraction.

Use *u*-substitution. *u* = sin²*x*

Before integrating, expand the integrand.