Schmall, Charles Nelson. [from old catalog] · New York, D. Van Nostrand company · leaf 149
5°. 49. Through what angle should the axes be turned so that x-axes maypass through (- 4, 12) in 4 x - 3 ?/ + 6 = 0 ? CHAPTER YII THE PARABOLA 96. Definition of Conic. — A conic section or a conic is the locus of a point which moves in a plane so that its distance from a fixed point called thefocus… … Fig. 105. PP PD always. The ratio e is called the eccentricity. When 6 = 1, the conic is called a Parabola. When e < 1, an Ellipse. When e > 1, an Hyperbola. Example 1. Find the equation of the parabola, focus at the point(2, 3), and directrix the line 3x + 4?/ — 2 = 0.Let {X, y) be any point…
Geometry, Analytic
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