An Elementary Treatise On Conic Sections And Algebraic Geometry, With Numerous Examples And Hints for Their Solutions, Especially Designed for the Use of Beginners
The book An Elementary Treatise On Conic Sections And Algebraic Geometry, With Numerous Examples And Hints for Their Solutions, Especially Designed for the Use of Beginners was written by author G Hale George Hale Puckle Here you can read free online of An Elementary Treatise On Conic Sections And Algebraic Geometry, With Numerous Examples And Hints for Their Solutions, Especially Designed for the Use of Beginners book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is An Elementary Treatise On Conic Sections And Algebraic Geometry, With Numerous Examples And Hints for Their Solutions, Especially Designed for the Use of Beginners a good or bad book?
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Putting x = aein the equation to the curve, we have or y = + - ; hence the latus rectum = — = 2a (1 — e") in the ellipse, and = 2a (e* — 1) in the hyperbola. *201. In the ellipse the normal bisects the interior angle between the focal distances, and in the hyperbola the exterior angle; and the focal radii make equal angles with the tangent. The equation to HP, since it passes through {x'y), (ae, 0) is -^=^y- (1), x — ae X —ae ^ ' and similarly, the equation to 8P\b ^JL^ = ^Jl— (2). X ■{■ ae X ■...{■ ae Hence, forming the equation to the bisector PG of the angle between (1) and (2), we have, by the rules of Art. 59; — {fC — ae) y + y'x — aey _ (a;' + ae) y — y'x — aey' .„. {y'-+{x--aey]k ~ {y^+(a,' + ae)'}i --W. which we might shew by reduction to be the equation to the normal at {x'y"). This may however be proved briefly as fol- lows. The denominators of (3) are evidently HP and SP, and therefore reduce, for the ellipse, to a — ea;' and a + ea;', as in Art.
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