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Matrices and Determinants

Section: Mathematics

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Question : 16

Total: 48

Consider the matrices A=[

x	y	0
−3	1	2
1	−2	z

]‌ and ‌B=[

1	−2	−2
2	0	1
2	1	0

] If the cofactors of the elements z,1 in 3‌rd ‌ row and x of A are 9,4,3 respectively then AB=

[AP EAPCET 22 May 2025 S1]

[
−7 −4 −8
−1 8 7
3 −3 −4
]
[
7 −6 8
−5 4 −5
−5 −3 −4
]
[
7 −6 −4
3 8 7
−5 −3 −4
]
[
7 −6 8
−1 8 −5
3 −3 −4
]

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