Archie and his friends went scuba diving. Each person recorded his dive depth. If land represents 0, which dive depth is closest to the surface of the water?
-20 feet
-50 feet
-65 feet
-32 feet

To diagonalize an nxn matrix a means to find an invertible matrix p and a diagonal matrix d such that a pdp d p ap or [1 3 dh epap 3 let a=-3 -5 -3 3 3 1 step 1: find the eigenvalues of matrix a "2's" step 2: find the corresponding eigenvectors of a step 3: createp from eigenvectors in step 2 step 4 create d with matching eigenvalues.