This is MATLAB exercise and it should be solved by using matlab. Need the code of the two question.

Matlab Exercises Create a script for the following exercises: I. Let A and B be two 5 5 matrices with random entries between 0 and 1. Test whether (A +Is)(A Is)A2 - Is, where Is diag(1,1,1,1,1) E R55. The best way to do this is to compute (A +Is) (A -Is) (A2 - Is) and check if it is the zero matrix. Test whether (A B)(A-B A2-B2 2. In homework 2 you were asked to solve the system Ax = b with 31-8 11 11 -6 25 113 using the rref command and print on screen the error vector Ax - b, and compute its norm norm(A*x - b). Compare this error to the error you obtain when using the "backslash" operator to solve the system above