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 91
below OX, at C, D, E, G, H, etc.; erectperpendiculars to OX in- a tersecting these arcs atC and C, D and D,E and E, etc. These points of inter-section will be points onthe parabola, for theyare all equally distantfrom AB and F by theconstruction. By taking these pointssufficiently near together,the… … Fig. 32. Analytical Geometry. 83 Hence o — — ecos 0 becomes p = — - cos 0 Art. 59. It is evident from the form of the parabolaequation, y2 = 2 px, that x cannot be negative withoutmaking y imaginary, hence no point on the parabolay2 = 2 px can lie to the left of the Y-axis; that is, the curvehas…
Geometry, Analytic · Calculus
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