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If A and B are two square matrices of th...

If A and B are two square matrices of the order 3, then the value of 998 `tr(I)-999 tr(AB)+999tr` (BA) is

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Knowledge Check

  • If A and B are square matrices of order 3 such that |A|=5 and AB=-5I , then the value of |B| is

    A
    `-5`
    B
    `-25`
    C
    25
    D
    none of these

  • If A and B arę square matrices of same order such that AB = A and BA = B, then

    A
    `A^(2)=A,B^(2)=B`
    B
    `A^(2)=A,B^(2) neB`
    C
    `B^(2)=B,A^(2) neA`
    D
    `A^(2) ne A,B^(2) neB`

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