please answer the question with explanation

Question V (10 points): 1. (4 points) Find functions f1 and f2 such that both f1(n) and f2(n) are (g(n)), but f1(n) is not (f2(n) ). 2. (6 points) Determine whether the following statements are true or false. Briefly justify your answer. 1. If f(n) is (g(n)), then 2f(n) is (2g(n)) 2. f(n)+g(n) is (min(f(n),g(n)). 3. 2na is O(2n), where a is a constant