### Home > CALC > Chapter 4 > Lesson 4.1.1 > Problem 4-9

4-9.

Write a Riemann sum that finds

*A*(*f*, −8 ≤*x*≤ 8) for*f*(*x*) = 2*x*^{1/3}+ 1, using the number of rectangles given below. Then evaluate with the summation feature of your calculator. Homework Help ✎16 rectangles

64 rectangles

Let's use right endpoint rectangles:

Let's use midpoint rectangles: