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t=0:t_inter:t_end;
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for i=2:nps
x(i,=x(i-1,+h*((A-B*K)*x(i-1,')';
end
figure(1);
plot(t,x(:,2)-x(:,5),'y-',t,x(:,3),'g-',t,x(:,4),'r-',t,x(:,1),'k-');

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