### Home > APCALC > Chapter 3 > Lesson 3.4.3 > Problem 3-177

3-177.

Write a Riemann sum to estimate the area under the curve for left endpoint rectangles given

*.*

General left-endpoint Riemann sum:

Calculate the sum for

.Substitute.

How can you use your result to estimate the area under the curve for

? What about the area under the curve for ? Consider the shape of the graph of

.