%Sample to produce the histogram in the text.

xinit=0.1;
Nx(1)=xinit;

x=xinit;
for i=2:20000  %NOTE:  This could take a minute or two to run
   Nx(i)=x.^2-2;
   x=Nx(i);
end

hist(Nx,400);  %The text said to use 400 bins in the histogram.