how can I create a recursive graphic with matplotlib

[royer14]

Can you explain the context? Are you trying to translate a matlab book into python? Is this homework?

No,rather it is a challenge that I proposed, look at something that I have been able to do.

import matplotlib.pyplot as plt
import numpy as np
#------------------
ni = 10
a = -0.5
b = np.zeros(ni+1)
n = np.arange(ni+1)
y0 = 1
x0 = 0
x = np.zeros(ni+1)
y = np.zeros(n+1)
y[0] = y0
#----------------
#for i in range(y0-1,ni+1):   --->             |perfect 0 to 10
#    y[i] = a + b[i]+ n[i] + x[i] + x_0 + y_0  |this part I can not interpret it

#markerline, stemlines, baseline = plt.stem(x, y, '-.')
# setting property of baseline with color red and linewidth 2
#plt.setp(baseline, color='r', linewidth=2)
#plt.show()