Let M and N be two 3xx3 nonsingular skew...

Let M and N be two `3xx3` nonsingular skew-symmetric matrices such that `Mn=NM`. If `P^(T)` denotes the transpose of P, then `M^(2) N^(2) (M^(T)N)^(-1) (MN^(-1))^(T)` is equal to

`M^2`

`-N^2`

`-M^2`

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