The length from F1 to F2 is 2 times a, the semimajor axis of the ellipse. It is not clear what x signifies, but if one side of the ellipse is at (0,0), x = a.
Snow W.
asked • 02/22/21Whispering Gallery Word Problem
In a whispering gallery, any sound at one focus of an ellipse reflects off the elliptical roof directly to the other focus. If the center of the whispering gallery is x, find the distance that sound travels from focus F1 to F2. Any help is appreciated!
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