Analytic geometry, for technical schools and colleges (1897)
Lambert, Preston Albert, 1862-1925 · New York, Macmillan · leaf 212
c In the ZX-plane there is the fixed parabola 2- = 2 ex, inthe Xl-plane the fixed parabola y^ — — 2bx. The figure gener-ated by an hyperbola whichmoves with its center on theX-axis, the plane of the hy-])erbola perpendicular to theX-axis, the axes of the hy-l)erbola the intersections ofthe plane of… … FiG. 174. tion of the generating hyper bola in any position, that is, the equation of the hyperbolic paraboloid, is —=2x. c b Art. 101,—The Conoid The center of an ellipse moves in a straight line perpendicu-lar to the plane of the ellipse. The major axis is constant forall positions of the…
Geometry, Analytic
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
