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Hi there friends, I've been doing this question: P is a point on the ellipse with equation x^2/a^2 +y^2/b^2 = 1 with focus at S. The normal at P intersects the X-axis at Q. Show that QS=ePS. I let my co-ordinates by (x1, y1), found the point Q and distance of PS. I then tried to prove...