Analytic geometry for colleges, universities, and technical schools (1892)
Nichols, E. W. (Edward West), 1858- · Boston [Mass.] : Leach, Shewell & Sanborn · leaf 107
erpendicular to each other. Cor. 1. Making ?/ = 0 in (1) and (2), we find in each case that X ^ — ^; hence, the tangents at the extrem,ities of the -yp=p{x+l 92 PLANE ANALYTIC GEOMETRY. latus-rectum and the directrix meet the axis of the parabolain the same point. The values of the coefficients of… … Fig. 32. The equation of the parabola when referred to OY, OX, is 2/2 = 2px . . . (1). We wish to ascertain what this equation becomes when thecurve is referred to DY, DX, as axes. Let P (x, y) be any point of the curve; then, Fig. 32 (OC, CP) = (x, y), and (DC, CP) = {x, y). Prom the figure, we…
Geometry, Analytic
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