Bailey, Frederick H. (Frederick Harold), 1865- · Boston, London, Ginn & Co. · leaf 162
n hyperbola, with the tranverse axis parallelto OY. We find by § 69 the following values: Centre, (x = 0, y = 0); THE CONIC SECTIONS. 147 Transverse axis^ x = Oj_e = Vf = WlO;Foci, (x = 0, y = ± V5);Vertices, (x = 0, y = ± V2);Directrices, y = ± ? Vo;Asymptotes, x = ± Vfy.These results, transferred… … Fig. 66. Ex. 3. Finally, we will consider y2 — 4y + 8x + 28 = 0.There is here only one quadratic term. By completing the square,we have 148 PLANE ANALYTIC GEOMETRY. y2 — 4y + 4 = — 8x — 24,or (y - 2)-2 = - 8 (x + 3). Placing • y - 2 = y, X + 3 = x,we have y2 - - 8x. This is the equation of a…
Geometry, Analytic
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
