### Home > CALC > Chapter 4 > Lesson 4.2.3 > Problem 4-77

4-77.

If

Notice that the bounds have flipped and the integrand is now negative.

Split this problem into a sum of two integrals:

Integral 1: Notice that the bounds shifted 8 units to the right... but so did the integrand:

.Integral 2: This integral represents a rectangular area with base:

and height: . Add.

The bounds shifted

units to the right, but the integrand shifted units to the left. We do not have enough information to evaluate this integral.