A general geometry and calculus : including book I. of the general geometry, treating of loci in a plane; and an elementary course in the differential and integral calculus (1881)
Olney, Edward, 1827-1887 · New York : Sheldon and Co. · leaf 217
Fig. 202. 300. Cor.— The semi-conjugate axis is a mean proportional betweenQui focal distances. 188 PKOPERTIES OF PLANE LOCI. (&) SUPPLEMENTAHY CHOKDS AND CONJUGATE DIAMETERS. 801. Def.—The term Ordinate, as used in connection with theconic sections, may mean any line drawn from a point in the…
Geometry, Analytic · Calculus
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