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If A=[{:(a, b), (c, d):}] " then " A^(-1...

If A`=[{:(a, b), (c, d):}] " then " A^(-1)` = ____.

A

`(1)/(ab-cd)[(b,-c),(-d,a)]`

B

`(1)/(ad-bc)[(b,-c),(-d,a)]`

C

`(1)/(ab-cd)[(b,d),(c,a)]`

D

None of these

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a
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TARGET PUBLICATION-MATRICES-COMPETITIVE THINKING (Inverse off a matrix )
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  5. If A=[((k)/(2),0,0),(0,(l)/(2),0),(0,0,(m)/(4))] and A^(-1)= [((1)/(2)...

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  12. if A=[a(ij)](2*2) where a(ij)={i+j , i!=j and a(ij)=i^2-2j ,i=j then A...

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  13. The element of second row and third column in the inverse of [[1, 2, 1...

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  16. If matrix A=[(1,2),(4,3)] such that Ax =I then x=

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