| Exam Board | OCR MEI |
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| Module | Paper 2 (Paper 2) |
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| Year | 2018 |
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| Session | June |
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| Topic | Implicit equations and differentiation |
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15 You must show detailed reasoning in this question.
The equation of a curve is
$$y ^ { 3 } - x y + 4 \sqrt { x } = 4 .$$
Find the gradient of the curve at each of the points where \(y = 1\).