Mathematics 9709 · AS & A Level · Differentiation

Differentiation — practice question

The curve is given by the equation $5x^2y + 4e^{2y} - 7x + 10 = 0$.
(a)[6]

Find an expression in terms of $x$ and $y$ for $\frac{dy}{dx}$ and hence find the gradient of the curve at the point for which $y = 0$.

(b)[2]

Show that there is no point on the curve at which the tangent is parallel to the $y$-axis.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: Try using the product rule when differentiating $5x^2y$.

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