controllability matrix
Cc=cont_mat(A,B)
Cc=cont_mat(sl)
:a,b two real matrices of appropriate dimensions : :sl linear system ( syslin list) :
cont_mat returns the controllability matrix of the pair A,B (resp. of the system sl=[A,B,C,D]).
Cc=[B, AB, A^2 B,..., A^(n-1) B]