图形1绘制
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
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()
图形2绘制
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
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("heart.png") plt.show()