Woods, Frederick S. (Frederick Shenstone), 1864-, Bailey, Frederick H. (Frederick Harold), 1865- · Boston, New York [etc.] Ginn and Company · leaf 323
nce there is no part of this surface on the negative side of theplane XOY. The surface is called an elliptic paraboloid, and evidently may l>e gener-ated by moving an ellipse of variable magnitude always parallel to theplane XOY, the ends of its axes always lying respectively on the parabolas2 =… … Fig. 189 which is the equation of anhyperbola with its transverseaxis along OX and its conjugate axis along OZ. Placing x = 0, we have = 1, (3) which is the equation of an hyperbola with its transverse axis along OYand its conjugate axis along OZ. If we place z = ± zv and write the resulting…
Geometry, Analytic · Calculus
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