Consider the following statements.
1.|If |ϕc| = 0; then the system is uncontrollable
2.If |ϕc| ≠ 0, then the system is controllable.
3.If |ϕo| = 0; Then system is not-observable
4.If |ϕo| ≠ 0; then system is observable.
where c = controllability and o = observability.
Which of the above conditions are correct for the controllability matrix?
1
1 and 2
2
2 and 3
3
3 and 4
4
1 and 4