author: george shoobridge carr

A Synopsis of Elementary Results in Pure and Applied Mathematics: Volume 2: Containing Propositions, Formulae, and Methods of Analysis, with Abridged Demonstrations

... example from the same article is an illustration of this— Ex.-—Any chord BB (Fig. 88) of a conic HOKD is cut harmonically by any line PKAH through P, the pole of the chord, and the tangent at K. The ellipse BKB here projects into a ...

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