Mathematics 4024 · O Level · Functions

Functions — practice question

Functions together with inverses.

(a)[1]

Given $f(x) = 4(2 - x)$, find the value of $f(-5)$.

(b)[2]

Solve the inequality where $f(x)>3$.

(c)[2]

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

(d)[3]

Given $g(x) = 7 - \frac{3x}{5}$ and $f(p) = g(2p + 1)$, find the value taken by $p$.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$28$” …