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A direct method of obtaining the Foci and Directrices from the general equation

Published online by Cambridge University Press:  20 January 2009

D. K. Picken
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The general equation of the second degree in two variables

can be brought by a direct process into the form

the determination of the constants ξ η l, m, n depending only on the solution of quadratic equations; so that the method is suitable for determining the foci, directrices, and eccentricities of conies with given numerical equations.

Information

Type
Research Article
Information
Proceedings of the Edinburgh Mathematical Society , Volume 23 , February 1904 , pp. 96 - 99
Copyright
Copyright © Edinburgh Mathematical Society 1904