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If A=[(1,2),(4,1)] , then A^-1= (A) [(-1...

If `A=[(1,2),(4,1)] , then A^-1=` (A) `[(-1,-2),(4,1)]` (B) `-1/7 [(1,2),(-4,-1)]` (C) `1/7[(-1,-2),(4,1)]` (D) `1/9[(1,2),(4,1)]`

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