week7(10/22)Conics and Deltoid
the ellipse based on the parametric representationx = a cos t
y = b sin t
the tangent on the ellipse
a point tangent on the ellipse
the hyperbola
the tangent on the hyperbola
an animation displaying a rigid ellipse sliding inside a deltoid
an animation displaying a rigid deltoid sliding outside an ellipse
an animation displaying an ellipse tangent to a pair of circles and the pair of their external common tangents
