plt.plot(range(1 ,n+1),UFk,label = 'UFk',color = 'orange') plt.plot(range(1 ,n+1),UBk2,label = 'UBk',color = 'cornflowerblue') plt.ylabel('UFk-UBk') x_lim = plt.xlim() plt.plot(x_lim,[-1.96,-1.96],'m--',color = 'r') plt.plot(x_lim, [0,0],'m--') plt....
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