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If A^(-1)=[[1,-1, 2],[0, 3,1],[ 0 ,0,-1/...

If `A^(-1)=[[1,-1, 2],[0, 3,1],[ 0 ,0,-1/3]]` , then `|A|=-1` b. `adj A=[[-1, 1 ,-2],[ 0,-3,-1],[ 0, 0, 1/3]]` c. `A=[[1, 1/3, 7 ],[0, 1/3, 1],[0 ,0,-3]]` d. `A =[[1,-1/3,-7],[ 0,-3, 0],[ 0, 0, 1]]`

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CENGAGE PUBLICATION-MATRICES-All Questions
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