Matrix Cofactor Sum (Jee Mains) | ExamDuo
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Determinants
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Matrix Cofactor Sum
For the matrix A =
3
2
4
1
4
1
2
6
3
and where A
ij
is co-factor of elements a
ij
, then a₁₁A₁₁ + a₁₂A₁₂ + a₁₃A₁₃ =
SELECT ONE OPTION
A
8
B
12
C
-8
D
7
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