例题1: T3(n) = Ω(T1(n)) 因为: T1 = 30logn. T3 = 10log3n 则 10log3n >= C * 30logn
例题2: 两个算法的时间复杂度是,T1(n) = 10n^2 T2(n) = 32^n 则 T1(n) = O(T2(n))
例题3: