Find and if for every positive integer i,a) Ai = {?i, –i + 1,...,–1, 0, 1,....,i –1, i}.________________b) A, = {?i, i}________________c) Ai- = [–i, i], that is, the set of real numbers x with –i ? x ? i.________________d) Ai = [i, ?), that is, the set of real numbers x with x ? i.

Solution: Step 1 :We have to find the value of for every positive integer i.Step 2 : Ans : Step 3 :Ans :