import numpy as np
import matplotlib.pyplot as plt

N = 4
pi = np.pi
x = np.arange(0,1,0.01)
L = len(x)
# print(x)


def f0(t):
    return [t,np.zeros(len (t))]
"""
def f0(t):
    return [ np.cos(2*pi*t), np.sin(2*pi*t)]
"""
graphe_f0 = f0(x)

plt.plot( graphe_f0[0], graphe_f0[1] )
plt.show()