If T(n)=2T(n/2)+n2T(n) = 2T(n/2) + n^2T(n)=2T(n/2)+n2, what is the asymptotic growth rate?
O(n)O(n)O(n)
O(nlogn)O(n \log n)O(nlogn)
O(n2)O(n^2)O(n2)
O(n3)O(n^3)O(n3)