(a(i))[4]
Express $f(x)$ in the form $a(x - b)^2 + c$, and hence state the coordinates of the vertex on the graph of $y = f(x)$.
(a(ii))[2]
State the range for $g$.
(a(iii))[4]
Find a formula for $g^{-1}(x)$ and state the domain of $g^{-1}$.
Mathematics 9709 · AS & A Level · Functions
Functions — practice question
The function $f$ is defined by $f(x) = 4x^2 - 24x + 11$, where $x \in \mathbb{R}$.