Question
An elliptical whispering gallery is 10 m long. Anna and Francis find that if they each stand 4 m away from the ends of the
An elliptical whispering gallery is 10 m long. Anna and Francis find that if they each stand 4 m away from the ends of the gallery at its foci, they can hear each other perfectly. What is the width of the gallery?
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Calculus One And Several Variables
Authors: Saturnino L Salas, Garret J Etgen, Einar Hille
10th Edition
0470472766, 9780470472767
