For the integral, (a) find the indicated approximation, and(b) determine if your approximation is an under-estimate, an over-estimate, or exact.
- RHS(3) for

Answer
- We divide the interval [-5,1] into 3 sub-intervals of length 2. On each sub-interval we use the value of f at the right endpoint as the "height" of the rectangle.

- Since the function we're integrating is increasing, a right-hand sum is an over-estimate.