3. Consider the equivalent system of equations where Ax = b aj (i 1)-1 and b =i-1 = for i, je {1,..., n}. For several n = {13,..., 25}, solve the system in MATLAB. Then use the solution from MATLAB to propose the exact solution of the system for any n > 1. Prove that your guess is correct and explain the presence of any errors in the approximate solution.