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- import matplotlib.pyplot as plt
- #约定俗成的写法plt
- #首先定义两个函数(正弦&余弦)
- import numpy as np
- X=np.linspace(-np.pi,np.pi,256,endpoint=True)
- #-π to+π的256个值
- C,S=np.cos(X),np.sin(X)
- plt.plot(X,C)
- plt.plot(X,S)
- #在ipython的交互环境中需要这句话才能显示出来
- plt.show()
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