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Write the minor and cofactor of each ele...

Write the minor and cofactor of each element of the following determinants and also evaluate the determinant in each case: ` |[1,3,-2],[4,-5,6],[3,5,2]| `

Text Solution

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The correct Answer is:
`M_(11)=-40`, `M_(12)=-10`, `M_(13)=35`
`M_(21)=16`, `M_(22)=8`, `M_(23)=-4`
`M_(31)=8`, `M_(32)=14`, `M_(33)=-17`;
`A_(11)=-40`, `A_(12)=10`, `A_(13)=35`
`A_(21)=-16`, `A_(22)=8`, `A_(23)=4`
`A_(31)=8`, `A_(32)=-14`, `A_(33)=-17`; `-80`
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