Analytic geometry for colleges, universities, and technical schools (1892)
Nichols, E. W. (Edward West), 1858- · Boston [Mass.] : Leach, Shewell & Sanborn · leaf 269
e the, conclusions of case 4 are true for thecurves themselves. 194. We have defined the conies, Art. 191, as the curvescut from the surface of a right circular cone by a plane, andassuming this definition we have found and discussed theirgeneral equation. Art. 193. A conic, hoivever, tnay be… … Fig. Let us assume the definition of Art. 194 as the basis of theoperation. Let F be the fixed point and OY the fixed line.Let P be the generating point in any position of its path. THE STRAIGHT LINE. 255 Draw FO J_ to OY, and take OY and OX as co-ordinate axes.Draw PL i| to OY, PD J_ to OY, and…
Geometry, Analytic
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