3-2 Draw a circle given by the parametric equations
3-3 Draw the graphs of the first three Chebyshev polynomials in the interval [-1,1]
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Reference: T. Cook: The Curves of Life.

3-8 Construct this interesting
drawing
Reference: William F. Rigge, Envelope Rosettes, Amer. Math. Monthly, (1920), p. 152.
Reference: William F. Rigge, Envelope Rosettes, Amer. Math. Monthly, (1920), p. 154.