# Find the inverse of the matrix A = $\left[\begin{array}{ccc}1& 2& -2\\ -1& 3& 0\\ 0& -2& 1\end{array}\right]$ by using elementary row transformations.                                                               OR Using properties of determinants, prove the following :

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find its cofactor
arrange it and find its transpose
that is its adjoint then use this formula
A-1=(1/IAI)X(adj A)
or
u can use elementary operation
also
contact me if u want a BF
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Read the textbook one or two times. Find the keywords and note it down.  Look references and guidelines. Try solving Problems.Ask only difficult Keywords
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