. The term "give" in this question paper means give strictly only your final answer. Question 1 5+6+4 Marks] Let a E R and set fa : R - R: x-> >+1 -2 2-x| +a. S(a) = {r ER: fa(x) = 0) . (So, S(a) is a set) . P = {aER: S(a) = 0}. Qa = {rER: fa(x) > 0). (a) Give S(-4) and S(9). (b) Give P and Q2. (c) Give min(Q2), max(Q2), inf(Q2), and sup(Q2), if they exist