Which of the following is/are true about the least square method? The least squares solution makes the error as small as possible. OInterchanging rows never changes the solution of the least square...

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Extracted text: Which of the following is/are true about the least square method? The least squares solution makes the error as small as possible. OInterchanging rows never changes the solution of the least square method. We need least square method to find an approximate solution of an inconsistent system. |We should apply the least squares method to the system Ax=b, where b does not lie in the column space of A.