printf("given the differential equation  \n let select the state variables as x1=y,x2=y(dot),x3=y(double dot)")
a=[0 1 0;0 0 1;-10 -11 -6]
b=[0;0;8]

disp("x(t)=[x1;x2;x3]")
disp(a,"A=")
disp(b,"B=")