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3 and 4 .Determinants and Matrices
easy
જો $\Delta=\left|\begin{array}{lll}a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33}\end{array}\right|$ અને $a_{i j}$ નો સહઅવયવ $\mathrm{A}_{i j}$ હોય, તો $\Delta$ નું મૂલ્ય ......... .
A
$a_{11} \mathrm{A}_{31}+a_{12} \mathrm{A}_{32}+a_{13} \mathrm{A}_{33}$
B
$a_{11} \mathrm{A}_{11}+a_{21} \mathrm{A}_{21}+a_{31} \mathrm{A}_{31}$
C
$a_{21} \mathrm{A}_{11}+a_{22} \mathrm{A}_{12}+a_{23} \mathrm{A}_{13}$
D
$a_{11} \mathrm{A}_{11}+a_{12} \mathrm{A}_{21}+a_{13} \mathrm{A}_{31}$
Solution
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Standard 12
Mathematics
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