a. Let A={a,b,ce,1,2,4} , B={a, b, d, 2,5,7), and C={b,4,7,8} , find: i. ANC ii. (B-AU C iii. (C-A)X(C-B) iv. AxB) and PCO b. Given the following function. f(x)= - 3x2 + 7 Fx I. determine whether f(x) is bijection from Rto R ii. Let S=(-1,0,2,4,7). Find f(S)