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1. Let 1 12 2 A = 212 b = 4 ' 6 214 (a) Compute the QR factorization of A. (b) compute the

1. Let 1 12 2 A = 212 b = 4 ' 6 214 (a) Compute the QR factorization of A. (b) compute the LU factorization of A. (c) Solve Ax = b using two methods: first using QR, and then LU.

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