Mathematics 9709 · AS & A Level · Differentiation

Differentiation — practice question

A curve is given by the equation $x^2 - 2x^2y + 3y = 9$.
(i)[4]

Show, by differentiation, that $\frac{dy}{dx} = \frac{2x - 4xy}{2x^2 - 3}$.

(ii)[4]

Find the equation of the normal to the curve at the point where $x = 2$, and express your answer in the form $ax + by + c = 0$.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: State $3\dfrac{dy}{dx}$ as the derivative obtained from $3y$.

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