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Question
Out of the following which is a skew- symmetric matrix
Options:
A .  ⎡⎢⎣045−40−6−560⎤⎥⎦
B .  ⎡⎢⎣145−41−6−561⎤⎥⎦
C .  ⎡⎢⎣145−42−6−563⎤⎥⎦
D .  ⎡⎢⎣i+145−4i−6−56i⎤⎥⎦
Answer: Option A
:
A
In a skew-symmetrix matrix aij=ajii,j=1,2,3forj=i,aii=aji each aii=0.
Hence the matrix 045406560is skew-symmetric.

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