Schmall, Charles Nelson. [from old catalog] · New York, D. Van Nostrand company · leaf 316
ur-faces are generated by the revolution of a curve, the generatrixabout a fixed axis, the axis of revolution. A section of thesurface by a plane through this axis is called a meridiansection. It is clearly equal to the generating curve. A sec-tion ± to the axis is a right section, and by… … r/ \z Fig. 159. ^-axis be the axis of revolution section of the surface. Put CB = Let BDE be any righta [= CF]. Then, for any point on this section, x^ -\- y^ = a^.But a is the x of the point B before the rotation. 300 ANALYTICAL GEOMETRY Hence we must find x from the equation of the…
Geometry, Analytic
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