%uppg 4
hold off

for k=1;
H1=tf([0.001], [1 3]);
H2=tf([9], [1 2.8]);

G=feedback(k*H1, H2)
%eller explicit: G=(k*H1)/(1+k*H1*H2)

%step(G, 5)

%{
[y,t]=step(G, 5);
bool = all(diff(y)>=0)

if bool
step(G,5)
end
%}

grid on
hold on 
end