Consider two matrices A=[\table 1 ,2 ; 2 , 1 ;1 , 1 ] and {B}=[\table 1 ,2, -4 ;2, 1 , -4 ]. Which one of the following is correct?

Correct Answer is : B is the left inverse of A

B is the both sided inverse of A

UPSC NDA Math Model Paper 5

Question : 43 of 120

Marks: +1, -0

Consider two matrices A=[

] and B=[

1	2	−4
2	1	−4

]. Which one of the following is correct?

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