One focus of a hyperbola lies at the point (0, -7) and the corresponding directrix is the

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One focus of a hyperbola lies at the point (0, -7) and the corresponding directrix is the line y = -1. Find an equation for the hyperbola if its eccentricity is 

(a) 2, 

(b) 5.

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Thomas Calculus Early Transcendentals

ISBN: 9780321884077

13th Edition

Authors: Joel R Hass, Christopher E Heil, Maurice D Weir

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