-->//stability (unstable system !) -->// --> spec(f) ans = ! - 7.2552756 ! ! 7.2552756 ! ! - 3.081D-16 + 1.159D-08i ! ! - 3.081D-16 - 1.159D-08i ! -->// -->//controlability -->// --> n=contr(f,g) n = 4. -->// -->//observability -->// --> m1=contr(f',h(1,:)') m1 = 4. -->// --> [m2,t]=contr(f',h(2,:)') t = ! 0. 0. - 1. 0. ! ! 0. 0. 0. 1. ! ! - 1. 0. 0. 0. ! ! 0. 1. 0. 0. ! m2 = 2.