2. Factor the following systems into A = LU or PA = LU, and use the...

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2. Factor the following systems into A = LU or PA = LU, and use the factorization to obtain a solution for (x1, x2, x3). Show all steps to receive full credit. (a) (8 points) xı + x3 4 + X2 3 = x2 + x3 %3D (b) (8 points) X2 + x3 4 X1 X3 3 X1 + X2 2. Factor the following systems into A = LU or PA = LU, and use the factorization to obtain a solution for (x1, x2, x3). Show all steps to receive full credit. (a) (8 points) xı + x3 4 + X2 3 = x2 + x3 %3D (b) (8 points) X2 + x3 4 X1 X3 3 X1 + X2

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