Loney, S. L. (Sidney Luxton), 1860-1939 · London, Macmillan and co. · leaf 419
= {a - hf.Hence the locus of the point (x, y) is the curve {axf-\-(hyf = {a?-hf.This curve could be shewn tobe of the shape shewn in the figure where CL = CL a^-¥ a and CM^CM^ a … The equation to the evolute ofthe hyperbola would be found tobe {axf-{hyf=^{a? + hf. 428. Contact of different orders. If two conies,or curves, touch, i.e. have two coincident points in commonthey are said to have contact of the first order. Thetangent to a conic therefore has contact of the first…
Coordinates · Geometry, Analytic
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