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trisectrix of Longchamps |
cubic |
last updated: 2003-08-01 |
The trisectrix of
Longchamps curve is a cubic 1),
which is also
named the (equilateral) trefoil.
The curve is an epi spiral.
Longchamps studied the curve in 1888.
1) With equation x (x2 - 3y2) = x2 + y2.