%This is a sample script file.  Type the commands here
%  as if you were typing them "live" in Matlab.  In
%  this example, I'm doing two function iterations, then
%  plotting the result with a title and a legend.

x=0.7;  %My initial value of x

for k=1:100   %I'm going to do this 100 times
    y(k)=x*(1-x);    %Do the function, save in an array
    z(k)=3.1*x*(1-x);
    x=y(k);          %Re-set x for the next time around
end

%Since we might print this, use black for plotting
plot(1:100, y, 'k-', 1:100, z,'k-.o');
title('Sample Function Iteration')
legend('x(1-x)','3.1x(1-x)')