Loney, S. L. (Sidney Luxton), 1860-1939 · London, Macmillan and co. · leaf 206
We require the locus of (h, k). Since ^^ is the chord of contact of tangents from (7i, k)its equation (Art. 213) is ky = 2a(x + h). Since this straight line passes through the point (r^, y^)we haye %i = 2a{x^ + h) (1). Since the relation (1) is true, it follows that the point{hj k) always lies on…
Coordinates · Geometry, Analytic
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