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Rolling One Parabola on Another
The focus of a parabola that rolls around another fixed identical parabola describes a straight line, which is the directrix of the fixed parabola.
Contributed by:
Izidor Hafner
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Reference
[1] J. Bryant and C. Sangwin,
How Round Is Your Circle?: Where Engineering and Mathematics Meet
, Princeton, NJ: Princeton University Press, 2008, pp. 44–45.
RELATED LINKS
Parabola
(
Wolfram
MathWorld
)
Rolling a Circle on a Parabola
(
Wolfram Demonstrations Project
)
PERMANENT CITATION
Izidor Hafner
"
Rolling One Parabola on Another
"
http://demonstrations.wolfram.com/RollingOneParabolaOnAnother/
Wolfram Demonstrations Project
Published: August 15, 2012
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