Analytic geometry and principles of algebra (1913)
Ziwet, Alexander, 1853-1928, Hopkins, Louis Allen, joint author, Hedrick, E. R. (Earle Raymond), 1876-1943 · New York, The Macmillan Company · leaf 119
leare proportional to the distances of each from the polar of the other. 9. Show analytically that if two points are given such that the polarof one point passes through the second point, then the polar of the secondpoint passes through the first point. 10. Find the poles of the lines x — ?/ — 3 =… … we substitute for x and y the coordinates Xi, yi of a point Pi not on thecircle (Fig. 41), the expression (.i —/i)-+(?/i — A-)-— r- is differentfrom zero. Its value is called the jyjwcrof the point Pi (xl, ^i) icith respect tothe circle. As (xi — h)^ + (?/i — A-)- isthe square of the distance PiC =…
Geometry, Analytic
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