Dowling, L. Wayland (Linnaeus Wayland), b. 1867, Turneaure, F. E. (Frederick Eugene), 1866- · New York, H. Holt and company · leaf 153
yperbolas. The equation. 136 LOCI OP SECOND ORDER [Chap. VII. where Ji is a variable parameter, is the equation of a system ofconcentric hyperbolas (Fig. 85). All the hyperbolas containedin the system have the same asymptotes, as can be shown bysolving (1) for y and then allowing x to increase… … Fig. 85 zero (Art. 106). When k is an increasing positive number, thehyperbolas are all primary and recede farther and farther fromthe asymptotes. The contour lines about two contiguous mountain peaks form arough approximation to such a system of hyperbolas. 109. The system of confocal conies. foci…
Geometry, Analytic
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