Question

Find the inverse of the matrix

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Answer 1

Given matrix A=
`\left[\begin{array}{ccc}2&3&-1\\1&1&1\\-1&1&2\end{array}\right]`

Inverse of matrix =
`A^(-1)` = Adjugate A/ Determinant A

`A^(-1)` = (Adj. A)/ |A|