Find the eigenvalues and the eigenvectors of the matrix: 1-1 01 a=1-1 2-1 0 -1 1 4. this exercise refers to the same matrix a, defined in exercise 3. start with the vector u = (1, 2, 3). apply four steps of the power method, by hand, ie, compute a-u, a2 . eigenvalue? u, a3-u, a4-u, what are the successive approximations of the largest