import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(-np.pi,np.pi,100)
y = np.sin(x)
plt.plot(x, y, '-.')
plt.show()
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(-np.pi,np.pi,100)
y = np.sin(x)
plt.plot(x, y, '-.')
plt.show()