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If A is a square matrix of order 3 such ...

If A is a square matrix of order 3 such that `||A` =3, then find the value of `|a d j(a d jA)|dot`

A

`3^5`

B

`3^7`

C

`9`

D

`81`

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The correct Answer is:
D
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AAKASH INSTITUTE ENGLISH-DETERMINANTS -SECTION A
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  3. If A is a square matrix of order 3 such that ||A =3, then find the val...

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  12. If |{:(4,-4,0),(a,b+4,c),(a,b,c+4):}|=0, then a+b+c is equal to

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  16. The roots of the equation |{:(x-1,1,1),(1,x-1,1),(1,1,x-1):}|=0 are

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  17. The value of the determinant |{:(1,logba),(logab,1):}| is equal to

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  18. |{:(1+a,c,1+bc),(1+a,b,1+bc),(1+a,e,1+bc):}| is equal to

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  19. if [[-a^2,ab,ac],[ab,-b^2,bc],[ac,bc,-c^2]]=lambda a^2b^2c^2 then find...

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  20. If f(x) =|(1,x,(x+1)),(2x,x(x-1),(x+1)x),(3x(x-1), x(x-1)(x-2),x(x-1)(...

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