### Home > CALC > Chapter 2 > Lesson 2.2.3 > Problem 2-84

2-84.

Write a Riemann sum for a general function

*f*(*x*) to estimate*A*(*f*, 2 ≤*x*≤ 5) using*n*left endpoint rectangles of equal width if: Homework Help ✎*n*= 3 rectangles*n*= 9 rectangles*n*= 300 rectangles

General form of left-endpoint Riemann Sum:

*n* represents number of rectangles*a* represents starting value on the *x*-axis*b* represents ending value on the *x*-axis