Jane and sali cycle along the same 63km route jane took 3.5hours to cycle the 63km
sali started to cycle 4 minutes after jane started to cycle
sali caught up with jane when they had both cycled 30km
jane and sali bothed cycled at constant speeds
work out salis speed in km/h

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.