.] 24. In the ellipse if a = & the equation becomes x^ +1/^ = 0^. which isthe equation of the circle. The circle being thus a special form ofthe ellipse, find its eccentricity, and the distances of its foci anddirectrices from the centre. II. Tangents and Xormals. y 70. To find the equation of… … Let PQ be a secant through the points P{x\ y) and x^ y^Q{x,y) on the ellipse — + ^ = 1. The equation of the line through (x, y), {x, y) isX - x y - yx - x ~ y ~ %f The Ellipse. 143 or y-y=y-iY(-^) W- Also since {x\y), (x\y) lie ou the ellipse -2 + t2 = 1> therefore a2 + b- a * ¥ and .-.…
Geometry, Analytic
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