d) For a given matrix B. the eigenvalues and normalized eigenvectors are respectively as follows. A_ 5.45 e_ 0.93 41.93 ' 0.55 ' ' 0.33 0.33 ' i} Compute 5"\". (6 marks) ii) Determine whether the matrix 3'": is an orthogonal matrix. Justify your answer. (6 marks)