An Affine Fixed Point

Problem

Consider the ellipse E ⁣:x24+y23=1E \colon \dfrac{x^2}{4} + \dfrac{y^2}{3} = 1. A line through P(2,1)P(2, 1) meets the ellipse at MM and NN; through NN, the line of slope −32-\dfrac{3}{2} meets the ellipse again at QQ. Prove that the line MQMQ passes through a fixed point.

Answer

Solution

Difficulty8/10
TopicsReflection, conic sections, analytic geometry, Vieta's Formulas

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