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In applying one or more now operations while finding A^{-1} by elementary row operations, we obtain all zeros in one or more, then A^{-1} ______.

 

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A^{-1}  Does not exist,

A^{-1}=\frac{1}{|A|} a d j(A)

And |A|=0 if there are one or more rows or columns with all zero elements.

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