Question: If does B = A -1 ? 1 2 1 1 A =| 0 3 and B = 1 1 0 1

If

1 2 1 1 A =| 0 3 and B = 1 1 0 1

does B = A-1?

1 2 1 1 A =| 0 3 and B = 1 1 0 1

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