Let I= f(x) dx, where f is the function whose graph is shown below. 6 4 2 y 1 2 3 (a) Use the graph to find L2, R2 and M2. L2 R M2 = == = (b) Are these underestimates or overestimates of I? OL is an underestimate. OL is an overestimate. OR is an underestimate. OR is an overestimate. OM2 is an underestimate. OM2 is an overestimate. (c) Use the graph to find T2. T = How does it compare with I? TI