With the use of Matlab, solve the following exercises and comment on each of them to see which process was carried out.

Using Matlab

1. Be the square matrix A=1023 (a) Construct the matrix by adding the identity matrix of rank 3 to the right of matrix A (b) Apply the rref command (read the Matlab help) to the matrix B, retrieve the last three columns of the result in a matrix called Al (c) Execute the matrix product A * Al. What can you say about the Al matrix