Snyder, Virgil, 1869-1950, Sisam, Charles Herschel, 1879-, Hill, Theodore Preston. Early American mathematics books. CU-BANC · New York, H. Holt and Company · leaf 83
that it becomes imaginary if k \ > b. Finally, it is seen that the section x = k is a real ellipse, a point, or an imaginary ellipse, according as | k \ is less than, equal to, or greater than a. The ellipsoid, there fore, lies entirely within the rectan gular parallelopiped formed by the planes… … about its minor axis. This surface is called an oblate spheroid.If a > b = c, the ellipsoid is the surface of revolution obtained ARTS. 56, 57] THE HYPERBOLOID OF ONE SHEET 65 by revolving the same ellipse about its major axis. It is called aprolate spheroid. If a = b = c, the surface is a…
Geometry, Analytic
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