For (u) = u3 + 1 and (v) = 1/v, find each value. (a) ( + )

For φ(u) = u3 + 1 and ψ(v) = 1/v, find each value.
(a) (φ + ψ) (t)
(b) φ ͦ ψ) (r)
(c) (ψ ͦ φ) (r)
(d) φ3(z)
(e) (φ - ψ) (5t)
(f) ((φ - ψ) ͦ ψ) (t)