### Home > PC > Chapter 2 > Lesson 2.3.5 > Problem 2-130

2-130.

Suppose we want to find the area under the curve over the interval

What will the height of the first rectangle be if we use left-endpoint rectangles?

What will be the height of the first rectangle if we use right-endpoint rectangles?

Height of

.What will be the height of the last rectangle if we use right-endpoint rectangles?

For right-endpoint, we start at

and go to the end. So you want the height at that.What will be the height of the last rectangle if we use left-endpoint rectangles?

For left-endpoint, we start at

and go to the. So you want the. How would your answers change if the interval were

and the width of each rectangle were?