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if A is a 3xx3 matrix and |A| = 3, then ...

if A is a `3xx3` matrix and |A| = 3, then write the matric represented by `AxxadjA`.

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The correct Answer is:
( ( 3 , 0 , 0 ) , ( 0 , 3 , 0 ) , ( 0 , 0 , 3 ) )
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