Plane and solid analytic geometry; an elementary textbook (1905)
Ashton, Charles H. (Charles Hamilton), 1866- · New York, C. Scribner's Sons · leaf 160
Fig. 78. 144 ANALYTIC GEOMETRY [Ch. XI, § 80 Let the student show that the equation of a diameter oi the hyperboLa, ^ — ^ = 1, is b-x - aHiy = 0, [61] the parabola, ^^ = 2 mx, is hy = m. [62] The form of the equation of a diameter of an ellipse orhyperbola shows that it passes through the centre of…
Geometry, Analytic
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