The ellipitical cycloid
TAO Tao,QIU Wei-gang(School of Science,Huzhou Teachers College,Huzhou,Zhejiang 313000,China)
A smooth curve rolls without slipping outside another smooth curve.The orbit travelled by the fixed point on the rolling curve is a generalized cycloid.The equation of cycloid can be obtained by the arc-length coordinate.For the ellipse case,the ellipitical cycloid is drawn.
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