Mathematics (AS & A Level) · Feb / March 2020 · Paper 12 · Question 4
9709
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A curve has equation y = x2 −2x −3. A point is moving along the curve in such a way that at P the y-coordinate is increasing at 4 units per second and the x-coordinate is increasing at 6 units per second. Find the x-coordinate of P. [4]
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