Mathematics 9709 · AS & A Level · Differentiation

Differentiation — practice question

A function $f$ is defined for $x \in \mathbb{R}$ and satisfies $f'(x) = 2x - 6$. Its range is $f(x) \geq -4$.

(i)[1]

State the value of $x$ at which $f(x)$ has a stationary value.

(ii)[4]

Find a formula for $f(x)$ in terms of $x$.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Correct response $3$” …