4. Rewrite Program 2.2 to carry out SOR. Use =1.1 to recheck Example 2.24. Compare Jacobi, Gauss-Seidel, and SOR on the system of six equations in six unknowns: 3100021131021001310000131002101312100013u1u2u3u4u5u6=2523112325. The solution is x=[1,1,1,1,1,1]. The approximate solution vectors x6, after running six steps of each of the three methods, are shown in the following table