import numpy as np
import matplotlib.pyplot as plt
from numpy import sin, cos, tan, pi
from scipy.optimize import fsolve
def eq_circuito(s,q):
A = s[0]
B = s[1]
f = np.empty(2)
f[0] = R*cos(q)+C1*cos(B)+C2*sin(B)-C4+S
f[1] = R*sin(q)-C1*sin(B)+C2*cos(B)-C3
return f
# Constantes:
R = 40
C1 = 75
C2 = 8
C3 = 20
C4 = 100
# Chute inicial:
S0 = np.array([pi/4,30])
n = 100
q = np.linspace(0,pi,n)
Si = np.empty([n,2])
#print(Si)
for k in range(n):
Si[k,:] = fsolve(eq_circuito,S0,q[k])
S0 = Si[k,:]
plt.plot(q,Si[:,0])
plt.figure()
plt.plot(q,Si[:,1])
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