Plane and solid analytic geometry; an elementary textbook (1901)
Ashton, Charles H. (Charles Hamilton), 1866- · New York, C. Scribner's sons · leaf 261
asymptotic lines, it mustbe the equation of the asymptotic cone, which containsall these asymptotic lines of the surface. Multiplying 242 ANALYTIC GEOMETRY OF SPACE [Ch. V, § { by p2 and transforming to rectangular coordinates, itbecomes ^ + T _ t. = 0 a2 b2 c2 Similarly it may be shown that the…
Geometry, Analytic
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