If - - a 11 a 12 a 13 a 21 a 22 a 23 a 31 a 32 a 33 and A ij is cofactors of a ij- then the value of - is given by

The correct option is D a _ 11 A _ 11 + a _ 21 A _ 21 + a _ 31 A _ 31 Δ = a _ 11 amp; a _ 12 amp; a _ 13 a _ 21 amp; a _ 22 a ...

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If Δ = a 11...

Question

If $Δ = ∣ ∣ ∣ ∣ \begin{matrix} a_{11} & a_{12} & a_{13} a_{21} & a_{22} & a_{23} a_{31} & a_{32} & a_{33} \end{matrix} ∣ ∣ ∣ ∣$ and $A_{i j}$ is cofactors of $a_{i j}$ , then the value of $Δ$ is given by

a_{11} A_{31} + a_{12} A_{32} + a_{13} A_{33}

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a_{11} A_{11} + a_{12} A_{21} + a_{13} A_{31}

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a_{21} A_{11} + a_{22} A_{12} + a_{23} A_{13}

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a_{11} A_{11} + a_{21} A_{21} + a_{31} A_{31}

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