Use the Master Theorem to provide tight asymptotic bounds for the following recurrences. In each case, also specify the values of a, b, and f(n), and indicate which case of the Master Theorem applies. (a) T(n) = 7T (n/8) +n (b) T(n) = 2T (n/4) + Vn (c) T(n) = 9T (n/3) + na (d) T(n) = 4T(n/2) +n log? n