[Solution] Given the matrix
Question: Given the matrix
\[A=\left[ \begin{matrix} 2 & 3 & 1 \\ 1 & 2 & 3 \\ 3 & 1 & 2 \\ \end{matrix} \right]\]show that \(A\) is invertible. Then, using the \(adj(A)\), calculate the inverse and check that \(A{{A}^{-1}}=I\).
Deliverable: Word Document 
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