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If A=[2-1-1 2] and I is the identity mat...

If `A=[2-1-1 2]` and I is the identity matrix of order 2, then show that `A^2=4a-3Idot` Hence find `A^(-1)dot`

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Knowledge Check

  • If I_(3) is identity matrix of order 3, then I_(3)^(-1)=

    A
    `0`
    B
    `I_(3)`
    C
    `3I_(3)`
    D
    does not exist

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