Mathematics (AS & A Level) · Oct / Nov 2016 · Paper 21 · Question 6
9709
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The equation of a curve is 3x2 + 4xy + y2 = 24. Find the equation of the normal to the curve at the point 1, 3 , giving your answer in the form ax + by + c = 0 where a, b and c are integers. [8]
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