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Rolling Ellipse (Posted on 2018-12-07) Difficulty: 3 of 5
Consider an ellipse fixed at the origin of the xy-plane having semi-major axis 4 and semi-minor axis 3. A congruent ellipse rolls over the first ellipse without slipping. Initially, they share a common major axis.

Find the locus of focus (the one nearer to the origin) of the rolling ellipse, and calculate the distance traveled by the focus in one revolution (around the fixed ellipse).

No Solution Yet Submitted by Danish Ahmed Khan    
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Question No Subject Comment 2 of 2 |

Below is an example of twin & reversible primes: (173313197, 173313199); and (791313371, 991313371) Find the smallest non trivial pair with similar features .

Shell Shockers full version.<o:p></o:p>


  Posted by perkymills on 2019-03-09 01:52:00
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