import matplotlib.pyplot as plt
from math import*
import numpy as np


def Qin(i,n,teta):
    return max(0,sin(teta-((2*pi*(i-1))/5)))

def Qn(teta,n):
    S=0
    for p in range(1,n):
        S=S+max(0,sin(teta-((2*pi*(p-1))/5)))
    return S
X=np.linspace(0,2*pi,100)
L=list(range(1,6))
Y1=[Qin(3,5,u) for u in X]
Y2=[Qn(m,5) for m in X]
for i in range(1,6):

plt.subplot(2,2,1)
plt.plot(X,Y1,'b')
plt.subplot(2,2,2)
plt.plot(X,Y2,'r')
plt.plot(X,Y3,'b')
plt.show()