A lithotripter is a machine used to crush kidney stones using shock waves. The patient is in

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A lithotripter is a machine used to crush kidney stones using shock waves. The patient is in an elliptical tub with the kidney stone at one focus of the ellipse. Each beam is projected from the other focus to the tub so that it reflects to hit the kidney stone. See the figure.image


Suppose a lithotripter is based on an ellipse with equation


image


How far from the center of the ellipse must the kidney stone and the source of the beam be placed?

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Intermediate Algebra

ISBN: 9780134895987

13th Edition

Authors: Margaret Lial, John Hornsby, Terry McGinnis

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