Mathematics 0580 · IGCSE · Functions

Functions — practice question

We have $f(x) = x^2\;\;\; g(x) = \dfrac{x - 3}{2}$.

(a)[1]

Find the value of $f(-5)$.

(b)[1]

Find the composite function $gf(x)$.

(c)[2]

Find the inverse function $g^{-1}(x)$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “25.” …