x_m1 := Matrix(Z,2,3,[1,2,3,4,5,6]);; x_m2 := Matrix(Z,2,3,[1,3,2,6,5,2]);; IsIndependent([x_m1,x_m2]);

x_m1 := Vector([1,2]);; x_m2 := Vector([2,1]);; IsIndependent([x_m1,x_m2]);