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Let A and B be 3xx3 matrices such that A...

Let A and B be `3xx3` matrices such that A' = - A , B ' = B , then matrix `lambdaAB+3BA` is a skew - symmetric matrix for :

A

`lambda=-3`

B

`lambda=3`

C

`lambda=3 or -3`

D

`. lambda=3 and -3`

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