Multiple Choice Questions on In determinant the sum of the products of the elements of any row or column with the cofactors of so........... for NDA Exam Preparation

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Multiple Choice Questions

In determinant the sum of the products of the elements of any row or column with the cofactors of so...........

Mathematics (NDA) Matrices and Determinants
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    In determinant the sum of the products of the elements of any row (or column )with the cofactors of some other row or column is?

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    Explanation:

    \begin{bmatrix} a1 & b1 & c1\\ a2 & b2 &c2 \\ a3 & b3 & c3 \end{bmatrix}

    cofactor  A 2    B 2     C 2

    a1 A2  +b1  B2  +c1 C2=0

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