Snyder, Virgil, 1869-1950, Sisam, Charles Herschel, 1879-, Hill, Theodore Preston. Early American mathematics books. CU-BANC · New York, H. Holt and Company · leaf 85
plane x = k intersects the surface in the hyperbola fcf/2- 72 = 1, x=k. c*[ i — oV V a3 If | fe | < a, the transverse axis of this hyperbola is z = 0, x = k.The section on the plane x = a consists of the two lines be be The section on the plane x = — a consists of the lines be b c If k | > o,… … FIG. 26.
Geometry, Analytic
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