### Home > PC3 > Chapter 13 > Lesson 13.2.3 > Problem 13-90

13-90.

Let . Approximate the area under the curve on the interval

Use a calculator to approximate the area using both left and right endpoint rectangles.

Then average those approximations.

13-90.

Let . Approximate the area under the curve on the interval

Use a calculator to approximate the area using both left and right endpoint rectangles.

Then average those approximations.