我用Python的matplotlib库绘制了反比例函数,当x步长很小时,得出的图像是错误的,请问这是为什么?
代码:
步长为0.001(错误图像)
import numpy as np
import matplotlib.pyplot as plt
x = np.arange(-10, 10, 0.001)
y = 1/x
plt.plot(x, y)
plt.show()
步长为0.5(正确图像):
import numpy as np
import matplotlib.pyplot as plt
x = np.arange(-10, 10, 0.5)
y = 1/x
plt.plot(x, y)
plt.show()