Given f: r r, define f () = f(f(a)). which of the following statement is correet? if fis strictly monotonic, then f is strictly increa sing if f () =-z for all

Given f: R R, define f () = f(f(a)). Which of the following statement is correet? If fis strictly monotonic, then f is strictly increa sing If f () =-z for all æ e R, Then f is injective There does not erist a contin ous functionf: R>R such that f(r)=- for all a e R none of these