Python作业7--

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()

 

 

 

 

 

函数图形2绘制

import matplotlib.pyplot as plt
import numpy as np

x = np.arange(-2, 2, 0.0001)
y1 = np.sqrt(2 * np.sqrt(x ** 2) - x ** 2)
y2 = (-2.14) * np.sqrt(np.sqrt(2) - np.sqrt(np.abs(x)))
plt.plot(x, y1, 'r', x, y2, 'r')
plt.fill_between(x, y1, y2, facecolor='orange')
plt.savefig("4-1.png")
plt.show()