0 2 -1 -1 2 0 -1 0 -1 2 0 0 -1 O o 0 A = = : 0 0 0 0 0 0 2 -1 : -1 2 A is a 20x20 Toeplitz matrix. i) By writing a detailed code in MATLAB, for the initial x(0) = (1 1 11]" R20 and b = [0.1 0.2 guess 1.9 2.0]? E R20 solve the equation system Ax=b, by using c) Steepest Descent method, d) Conjugate Gradient method. *Determine conjugate directions with Hestenes-Stiefel method for d)