1.

Find minors and cofactors of all the elements of the determinant |{:(1,-2),(4,3):}|

Answer»


ANSWER :MINOR : `{:(M_(11)=3,M_(12)=4),(M_(21)=-2,M_(22)=1):}`
COFACTOR : `A_(11)=(-1)^(1+1)M_(11)=(-1)^2(3)=3`
`A_(12)=(-1)^(1+2)M_(12)=(-1)^3(4)=-4`
`A_(21)=(-1)^(2+1)M_(21)=(-1)^3(-2)=2`
`A_(22)=(-1)^(2+2)M_(22)=(-1)^4(1)=1


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