I. Use the informal definitions of O, and to determine the following assertions are TRUE or FALSE 1.1nin+1)/2 EO(n) 1.2 m(n+ 1)/4 e o() 1.3, n(n+ 1)/2 E (n) 1.4 n(n+1)/4 E O(2) 1.5.n(n+1)/2 E2 (n) 1.6 Suppose f(N)-O(M(N)and gt.N)-OjAp)) Justity your anewerns