Let f : [0, 1] → [0, 1] be defined by

Then (f o f) x is

Let f : A → B and g : B → C be the bijective functions. Then (g o f)^–1 is

Let be defined by. Then

Let f : [2, ∞) → R be the function defined by f (x) = x²–4x+5, then the range of f is

Let f : N → R be the function defined byand g : Q → R be another function defined by g (x) = x + 2. Then (g o f)3/2 is