Let λ 1 {\displaystyle \lambda _{1}} and λ 2 {\displaystyle \lambda _{2}} denote the two eigenvalues of the matrix A. Compute λ 1 {\displaystyle \lambda _{1}} and λ 2 {\displaystyle \lambda _{2}} and two associated eigenvectors x 1 {\displaystyle {\bf {x}}_{1}} and x 2 {\displaystyle {\bf {x}}_{2}} . Find some constants a {\displaystyle a} and b {\displaystyle b} such that: