Given the system of equation below; 3x 6y + 2z = 23 -4x + y -z = -8 x - 3y + 7z = 17 a) Computationally show that Gauss-Seidel method applied to the system of equations is divergent given the initial approximations as x = 0.9, y = -3.1, z = 0.9 [7 marks) b) How would you polish the above problem in other to achieve convergence? %3D [8 marks] c) How will you terminate the above-named iterative procedure after convergence is achieved? [5 marks] d) Explain how the above stated indirect method can help to improve the time complexity of the algorithm?