PYTHON: matplotlib, creating two graphs in a same panel

programme code:

 import matplotlib.pyplot as plt

import numpy as np

e = np.arange(-5,5,0.01)

f = np.sin(e)

z  = e**2 + e*5 + 2

plt.subplot(2,2,1)

plt.plot(e,f,'r--')

plt.ylabel('y-axis')

plt.xlabel('x-axis')

plt.title('anikets graph-1')

plt.subplot(2,2,2)

plt.plot(e,z,'g--')

plt.ylabel('y-axis')

plt.xlabel('x-axis')

plt.title('anikets graph-1')

plt.show()

output: