Analytic geometry for colleges, universities, and technical schools (1892)
Nichols, E. W. (Edward West), 1858- · Boston [Mass.] : Leach, Shewell & Sanborn · leaf 197
= — 2 (— i V2) = + V2. Substituting these values in (1), Art. 140 (since a — 0), we have 2x^ — V2 y + V2 a; — 1 = 0 . . . (3) (c) To refer the p>arahola to a tangent at the vertex and the axis. Substituting the values of the constants in (a), Art. 140, we have e V2 oc^ i m = — . = = — .60… … Fig. 56. Draw OX making an angle of — 45° with the X-axis;draw OY ± to OX. See {b). The equation of the parabolawhen referred to these axes is given in (3). Constructing the point (— .35, — .90), we have the vertexof the parabola 0. See (c). Draw OX and OY parallel tothe axes OX, OY respectively.…
Geometry, Analytic
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