Mathematics 0580 · IGCSE · Functions

Functions — practice question

The functions are given by $f(x)=6x-7$ and $g(x)=x^{-3}$.
(a)[2]

Find $f(x + 2)$. Give your answer in its simplest form.

(b)[2]

Find $f^{-1}(x)$.

(c)[2]

Find $x$ when $g(x) = f(22)$.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: Accurate expansion

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI