同一绘图区域绘制多图

import numpy as np
import matplotlib.pyplot as plt
a=np.arange(10)
plt.plot(a,a**1.5,'ro-',label='a')
plt.plot(a,-a**2.5,'gx:',label='b')
plt.plot(a,-a*6.5,'y*',label='c')
plt.plot(a,a*4.5,'bs-',label='d')
plt.plot(a,-a*10.5,'mH--',label='e')
plt.savefig('../R&Q_Pic/test2',dpi=600)
plt.legend()
plt.show()