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Let Delta=|{:(3,-1,-2),(4,5,6),(2,-3,1):...

Let `Delta=|{:(3,-1,-2),(4,5,6),(2,-3,1):}|` Find minor and cofactor of elements of `Delta`.

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To find the minors and cofactors of the elements of the determinant \( \Delta = \begin{vmatrix} 3 & -1 & -2 \\ 4 & 5 & 6 \\ 2 & -3 & 1 \end{vmatrix} \), we will follow these steps: ### Step 1: Calculate the Minors The minor \( M_{ij} \) of an element \( a_{ij} \) in a matrix is the determinant of the submatrix formed by deleting the \( i \)-th row and \( j \)-th column. 1. **Minor \( M_{11} \)**: \[ ...
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