Mathematics for engineering students, Analytical geometry and calculus (1907)
Keller, S. S. (Samuel Smith), 1867-1923, Knox, W. F., [from old catalog] joint author · New York : D. Van Nostrand company · leaf 90
path of a projectile is a parabola. When the curve is symmetrical to the j-axis as in Fig. 30, the equation takes the form, x2 = 2 py. As an exercise prove this last equation. Art. 56. If in the equation to the parabola (B), the abscissa of the focus (F), x = * be substituted, the 2 Analytical… … Fig- 3°- above the focus to the point below on the curve, form whatis called the latus rectum. (GH, Fig. 29.) The latus rectum evidently equals 2 p, and is often calledthe double ordinate through the focus. Art. 57. To construct the parabola. First Method. The definition suggests a simple…
Geometry, Analytic · Calculus
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