Sinc

Normalized (red) and unnormalized (blue) sinc function
import numpy as np import matplotlib.pyplot as plt x=np.linspace(-np.pi*6,np.pi*6,1000) y1=np.sinc(x) y2=np.sinc(x/np.pi) plt.plot(x,y1,color="blue") plt.plot(x,y2,color="red") plt.show
 * 1) !/usr/bin/python3