Question: Question#2 (50 points): (a) Assume that you have already computed the LU factorization, AT-LU, of the nonsingular matrix A. How would you use it to

Question#2 (50 points): (a) Assume that you have already computed the

Question#2 (50 points): (a) Assume that you have already computed the LU factorization, AT-LU, of the nonsingular matrix A. How would you use it to solve the linear system A x b? (Write all the steps clearly)

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