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parametric plot {1/16 sin^3(t), 1/(13 cos(t) - 5 cos(2 t) - 2 cos(3 t) - cos(4 t))}
parametric plot {1/16 sin^3(t), 1/(13 cos(t) - 5 cos(2 t) - 2 cos(3 t) - cos(4 t))}
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