Consider th matrix A=\left[\begin{array}{ccc} -4 &-3 &11\cr -7 &-5 &16\cr -5 &-4 &13 \end{array}\right].
A has one real eigenvalue. Find this eigenvalue, its multiplicity, and the dimension of the corresponding eigenspace.
The eigenvalue \lambda = ( ) has multiplicity( ) and the dimension of the corresponding eigenspace is( ).