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If A=[(1,0,2),(-1,1,-2),(0,2,1)] and Adj...

If `A=[(1,0,2),(-1,1,-2),(0,2,1)]` and Adj `A=[(5,x,-2),(1,1,0),(-2,-2,y)]` then (x,y) =

A

`(-4,1)`

B

`(4,1)`

C

`(-4,-1)`

D

`(4,-1)`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Adj[(1,0,2),(-1,1,-2),(0,2,1)]=[(5,a,-2),(1,1,0),(-2,-2,b)]implies[(a,b)]=

    A
    `[(-4,1)]`
    B
    `[(-4,-1)]`
    C
    `[(4,1)]`
    D
    `[(4,-1)]`

  • If [(x,y^(3)),(2,0)]=[(1, 8),(2,0)] then [(x,y),(2,0)]^(-1)=

    A
    `[(0,-2),(-2,1)]`
    B
    `[(1,0),(0,1)]`
    C
    `[(0,-8),(-2,1)]`
    D
    `[(0,1//2),(1//2,-1//4)]`

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