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If A is an 3xx3 non-singular matrix su...

If `A` is an `3xx3` non-singular matrix such that `A A^(prime)=A^(prime)A a n dB=A^(-1)A^(prime),` then `B B '` equals: (a)`B^(-1)` (b) `(B^(-1))'` (c) `I+B` (d) `I`

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