function iter1(f,N)
% m-file to test iterative maps - general function, without parameter
%
Xn = [];
%r = 2;
x = 0.3;
for i = 1:N
    x = feval(f,x);
    Xn = [Xn x];
end
figure(1) ; clf;
plot(1:N,Xn)
xlabel('Iteration Number')
ylabel('Xn')