作業三
Reference: T. Cook:
The Curves of Life.
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Reference: William F. Rigge, Envelope Rosettes, Amer. Math. Monthly, (1920), p. 152.
Reference: William F. Rigge, Envelope Rosettes, Amer. Math. Monthly, (1920), p. 152.
Draw this interesting pattern:
Construct a gif file animating the function f(x,t) = sin (x + t)
and include the gif in your web page.