Mathematics (AS & A Level) · Oct / Nov 2018 · Paper 21 · Question 7
9709
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x y O P Q The diagram shows the curve with equation y = sin 2x + 3 cos 2x for 0 ≤x ≤0. At the points P and Q on the curve, the gradient of the curve is 3. dy
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7(i)[2]
7(ii)[8]
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