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. 1. Consider the matrix A 3 -1 A -6 9 (a) By hand, find the LU-factorization of A (without pivoting). (b) Using the LU-factorization

. 1. Consider the matrix A 3 -1 A -6 9 (a) By hand, find the LU-factorization of A (without pivoting). (b) Using the LU-factorization of A found in (a), find A(by hand). Use fractions throughout you...

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