3) a. On a sketch of y = ed, represent the left Riemann sum with n = 2 approximative Sex dx. b. Write out the terms of the sum in a, but do not evaluate it. c. On a sketch of y = ed, represent the right Riemann sum with n = 2 approximationg f ex dx d. Write out the terms of the sum in c, but do not evaluate it. e. Which sum is an overestimate? Which sum is an underestimate? 4) Use the following figure, which shows a graph of f (x) to find each of the indicated integrals. The first area shaded red is 55 and the second area shaded black is 5. a. f f(x)dx b. fff (x)dx c. fff (x)dx d. fif (x) |dx