Bailey, Frederick H. (Frederick Harold), 1865- · Boston, London, Ginn & Co. · leaf 337
of which f 2 -f -„ = 1 is the largest, and which decrease in^ b c- magnitude, as we go from the coordinate plane, to the points (— a, 0, 0) and (a, 0, 0). This surface is an ellipsoid, of semi-axes a, b, and c, and is represented in Fig. 19 for the case in whicli a > b > c. x^ y^ + z^If c =… … Fig. 19, If b = a, the equation becomes ~- + — = 1, the equa- d, c tion of the ellipsoid of revolution, called the oblate spheroid, formed by revolving an ellipse around its minor axis, OZ. x^ + y^ + z^ If c = b ^ a, the equation becomes —^ = 1, or a x -j- y^ + z^ ^ a^, which is the equation of the…
Geometry, Analytic
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