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196 bytes added ,  14:11, April 28, 2010
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:*coefficient matrices and Gauss-Jordan elimination
 
:*coefficient matrices and Gauss-Jordan elimination
 
:*[[rank]] (row rank = column rank)
 
:*[[rank]] (row rank = column rank)
−
:*geometric representations, especially [[vector]]s
+
:*geometric representations, especially [[vector]]s and systems with more variables than equations
    
*[[Linear transformations]]
 
*[[Linear transformations]]
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*[[Orthogonality]]
 
*[[Orthogonality]]
 +
:*projections
 +
:*Gram-Schmidt Process and QR Factorization
 +
:*orthogonal matrices, orthogonal transformations
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:*data fitting, especially least squares
    
*Symmetric matrix
 
*Symmetric matrix
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