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Suppose A in an m x n matrix with linearly independent columns and QR factorization...

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Suppose A in an m x n matrix with linearly independent columns and QR factorization A = QR. Showhow the formula for the least-squares solution of Ax=b (given by Theorem 6.14) can be written usingthe QR factorization of A. Briefly explain the advantages of the formula you give over the formula givenin Theorem 6.14.

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