QRDecomposition
 Usage
Notes
 Further Examples
Performing a QR decomposition on this  x  matrix yields a pair of matrices.
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This checks the result.
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The same can be done for inexact matrices.
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This checks the result.
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Using QRDecomposition to get least-squares solutions of overdetermined systems Here is a  x  matrix and a  -vector.
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The following system of equations is overdetermined.
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This uses QRDecomposition to give a least-squares solution.
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This shows how close  is to rhs.
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