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[" 17.Let,"A=[[1,-2,1],[-2,3,1],[1,1,5]]...

[" 17.Let,"A=[[1,-2,1],[-2,3,1],[1,1,5]]" ,then prove that: "],[[" (i) "(AdjA)^(-1)=Adj(A^(-1))],[" (ii) "(A^(-1))^(-1)=A," (NCERT) "]]

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