function [xprime] = test(t,x)

global f11 f12;

A = [0 -1
     1  0];
B = [0 1]';

% Exosystem state
w = exp(-t);
% Asymptotic control 
u = -2*w + f11*x(1) + f12*x(2) - (f11+f12)*w;


xprime=A*x+B*u;