Mathematics 9709 · AS & A Level · Functions

Functions — practice question

The function $g$ is given by $g(x) = x^2 - 6x + 7$ for $x > 4$.

(main)[5]

First complete the square to produce an expression for $g^{-1}(x)$, and then state the domain of $g^{-1}$.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The composite expression should be $(y-3)^2-2$” …