The curve $y = x^2 - \frac{a}{x}$ has a stationary point at $(-3, b)$.
(main)[4]
Find the values of the constants $a$ and $b$.
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Differentiate to get $2x+ax^{-2}$ or an equivalent form” …