QUESTIÓN 3 If you have to solve many times for different vectors , but the same matrix A it is best to Ax = b a. determine the inverse of the matrix A. b. use the LU decomposition of the matrix c. use Gauss -elimination with partial pivoting d. use an iterative method. QUESTION 4 Consider the 3 x 3 system of linear equations 5x - z=2 y=2 - 3x + 2z=4 Let x (0) = (1,1,8)* What is the result of the first iteration using the Gauss-Seidel method? О (2, 2.3) О (2,2, 1.2) Not one of the options. O (2, 2, 5)

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A: Answer is in below steps.