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If I is identify matrix of order two, th...

If I is identify matrix of order two, then 3I would be which matrix ?

Text Solution

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The correct Answer is:
`[(3,0),(0,3)];` Scalar
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Knowledge Check

  • If I is unit matrix of order n, then 3I will be

    A
    a unit matrix
    B
    a scalar matrix
    C
    a triangular matrix
    D
    a zero matrix

  • 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

  • If I_(3) is identify matrix of order 3, then (I_(3))^(-1) equals

    A
    O
    B
    `3I_(3)`
    C
    `I_(3)`
    D
    Not necessarily exists

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