discrete math

QUESTION 4 Let A = { 1, 2, 3, 4), f, 8: A- A by f = { ( 1, 2), (2, 3), (3, 4), (4, 1) ), 8={ (1, 4), (2, 3). (3, 1), (4, 2) } Give your answer as: { ( 1, _). (2, _). (3. _), (4, _)} a. flog of = b. fog of . 8 =