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For matrix A=[(2,5),(-11,7)], (adjA)' is...

For matrix `A=[(2,5),(-11,7)]`, (adjA)' is equal to:

A

`[(-2,-5),(11,-7)]`

B

`[(7,5),(11,2)]`

C

`[(7,11),(-5,2)]`

D

`[(7,-5),(11,2)]`

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Knowledge Check

  • For matrix A=[(2,5),(-11,7)] (adj A)' is equal to :

    A
    `[(-2,-5),(11,-7)]`
    B
    `[(7,5),(11,2)]`
    C
    `[(7,11),(-5,2)]`
    D
    `[(7,-5),(11,2)]`

  • if A=[(1,-1,1),(1,2,0),(1,3,0)], then |adjA| is equal to

    A
    `-1`
    B
    `1`
    C
    `4`
    D
    None of these

  • If A is a square matrix of order nxxn , then adj(adjA) is equal to

    A
    `|A|^nA`
    B
    `|A|^(n-1)A`
    C
    `|A|^(n-2)A`
    D
    `|A|^(n-3)A`

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