4. Determine the tightest big-O complexity of the recurrence:
【p_p971】評論
Ans: (D) O(n^2)By Master Theorem:T(n) = 2T(n/2)+n^2, 得知 a=2, b =2, d=2.使得, d > log_b^a, => 2 > 1,故, T(n) = O(n^d) = O(n^2)