4. Use the SOR method with w = 1.2 to solve the linear systems 4x1 + x2 + x3 + X's = 6. -X1 - 3x2 + x3 + x4 = 6. 2x1 + x2 + 5x3 - X4 - xs = 6, -X1 - 12 - 13 + 4x4 = 6, 2x2 - x3 + x4 + 4x = 6 with a tolerance TOL = 10-3 in the lo norm.
4. Use the SOR method with w = 1.2 to solve the linear systems 4x1 + x2 + x3 + X's = 6. -X1 - 3x2 + x3 + x4 = 6. 2x1 + x2 + 5x3 - X4 - xs = 6, -X1 - 12 - 13 + 4x4 = 6, 2x2 - x3 + x4 + 4x = 6 with a tolerance TOL = 10-3 in the lo norm.