Python绘制分段函数

1.绘制分段函数：y=4sin(4πt)-sgn(t-0.3)-sgn(0.72-t)html import numpy as np import matplotlib.pyplot as plt #绘制分段函数：y=4sin(4πt)-sgn(t-0.3)-sgn(0.72-t) def sgn(x): if x > 0: return 1 elif x < 0:

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