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(Solved): A=100230121 ...



\( A=\left[\begin{array}{ccc}1 & -2 & 1 \\ 0 & 3 & 2 \\ 0 & 0 & 1\end{array}\right] \)


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As we know that formula of Inverse of A by using Adjoint Matrix of A= A?1= 1det(A)×Adj(A) Now, 1st we find determinant of A :- Det(A) = |A|= |1?21
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