### Home > PC > Chapter 2 > Lesson 2.3.3 > Problem 2-98

2-98.

Left = (width)(height of each rectangle)

Right = (width)(height of each rectangle)

What modification results in the right endpoints?

The left endpoint indices go from *k* = 0 to *k* = 3 whereas the right endpoint indices go from *k* = 1 to *k* = 4.