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1. The curve C has the equation 2x + 3y + 3xy = 4x. The point P on the curve has coordinates (-1, 1).
1. The curve C has the equation 2x + 3y + 3xy = 4x. The point P on the curve has coordinates (-1, 1). (a) Find the gradient of the curve at P. (5) (b) Hence find the equation of the normal to C at P, giving your answer in the form ax+by+c = 0, where a, b and c are integers. (3)
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Cambridge International AS & A Level Further Mathematics Coursebook
Authors: Lee Mckelvey, Martin Crozier
1st Edition
1108403379, 978-1108403375
