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Find the adjoint and reciprocal determin...

Find the adjoint and reciprocal determinats of `|{:(4,1,2),(7,3,5),(5,1,3):}|`

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The correct Answer is:
`|{:(" "1," "1," "-2),(-1/4," "1/2," "1/4),(-1/4," "-3/2," "5/4):}|`
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