import numpy as np
import time
 
x_values = []
def eq_diff3(V):
    return -V/10
values_dt = [0.01,0.1,1,2,10]
T = 50
vm_all = []
for dt in values_dt:
    start = time.time() #Começa contando aqui
    V0 = 50
    t = np.linspace(0,T,int(T/dt)+1)
    x = np.zeros(len(t))
    x[0] = V0    
    for i in range(1,len(t)):
        start = time.time()        
        x[i] = x[i-1] + eq_diff3(x[i-1])*dt    
    vm_all.append(x)
    x_values.append(t)
    end = time.time() # termina de contar aqui
    duration = end - start 
    print(duration) #printa quanto tempo demorou

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