Question

I’m trying to figure out how to plot the discrete function
y[n] = x[n-5] / (1 + x[n]).
Any help in figuring out the correct syntax is appreciated.

Answer 1

since your eq is equivalent to:

y[n+5] = (x[n])/(1+x[n+5])

I’ll plot the latter over some range (change if needed):

lower_limit=-10
upper_limit=10
N=100;

x=linspace(lower_limit,upper_limit,N);
y=x(1:end-5)./(1-x(6:end));

plot(x(6:end),y)