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posted by  Purple Flower on 8/26/2008 12:38:01 PM  |  status: Live  

linear algebra

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Proof the following statement.
 
A is a n x n matrix.   If A is invertible if and only if Ax=0 (zero vector) has only the trivial solution
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posted by Angel SK on 8/28/2008 4:09:26 AM  |  status: Live
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