6.3

python函数图形1绘制；

import matplotlib.pyplot as plt

import numpy as np

 

x = np.arange(0, 10, 0.0001)

y1 = x ** 2

y2 = np.cos(x * 2)

y3 = y1 * y2

plt.plot(x, y1,linestyle='-.')

plt.plot(x, y2,linestyle=':')

plt.plot(x, y3,linestyle='--')

plt.savefig("3-1.png")

plt.show()

fig, subs = plt.subplots(2, 2)

subs[0][0].plot(x, y1)

subs[0][1].plot(x, y2)

subs[1][0].plot(x, y3)

plt.savefig("3-2.png")

plt.show()【