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The matrix P=[{:(0,0,4),(0,4,0),(4,0,0):...

The matrix `P=[{:(0,0,4),(0,4,0),(4,0,0):}]` is a ………..

A

square matrix

B

diagonal matrix

C

unit matrix

D

None

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • The matrix A=[{:(1,0,0),(0,2,0),(0,0,4):}] is a .......

    A
    identity matrix
    B
    symmetric matrix
    C
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    D
    None of these

  • If x,y,z are nonzero real numbers, then the inverse of matrix A=[{:(x,0,0),(0,y,0),(0,0,z):}] is ………

    A
    `[{:(x^(-1),0,0),(0,y^(-1),0),(0,0,z^(-1)):}]`
    B
    `xyz[{:(x^(-1),0,0),(0,y^(-1),0),(0,0,z^(-1)):}]`
    C
    `1/(xyz)[{:(x,0,0),(0,1,0),(0,0,1):}]`
    D
    `1/(xyz)[{:(1,0,0),(0,1,0),(0,0,1):}]`

  • The matrix A=[{:(0,-5,8),(5,0,12),(-8,-12,0):}] is a .....

    A
    diagonal matrix
    B
    symmetric matrix
    C
    skew symmetric matrix
    D
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