If {A}=[\table 1 , 2 ; 1 , 1 ] and {B}=[\table 0 , -1 ; 1 , 2 ], then what is {B}^{-1} {A}^{-1} equal to?

Correct Answer is : [−131−2]

UPSC NDA Math Model Paper 3

Question : 71 of 120

Marks: +1, -0

If A=[

1	2
1	1

] and B=[

0	−1
1	2

], then what is B−1A−1 equal to?

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1	−3
−1	2

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