Use MATLAB software

a3. Using the Jacobi, Gauss-Seidel, and the SOR ( = 1.4) iterative methods, write and run code to solve the follow- ing linear system to four decimal places of accuracy: 7 3 -1 21 xi -1 0 3 8 14x2 -1 4 -1x3 2-4-1 6Lx4 Compare the number of iterations in each case. Hint: Here, the exact solution is x = (-1, 1,-1, 1)