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If A is a skew-symmetric matrix of order...

If A is a skew-symmetric matrix of order 3, then prove that det `A = 0`.

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`A^T=-A` as A is a skew symmetric matrix.
`|A|=|A^T|`
`|A|=|-A|=-|A|`
`2|A|=0`
`|A|=0`
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