Suppose f is a continuous function, and we know the following data: t 7.5 8 8.5 9 9.5 10 10.5 11 For each of the following, consider the function f on the interval [71 11]. Note that you do not. need to simplify any arithmetic! {a} Evaluate L4 (left. sum}, or explain what extra data we would need to compute it. (b) Evaluate R4 (right sum): or explain what extra data we would need to compute it. (c) Evaluate M4 {midpoint sum}, or explain what extra data we would need to compute it. (d) Suppose we know for certain that. f'(t}