Question
Write $A^{–1}$ for A = $\begin{bmatrix} 2 & 5 \\ 1 & 3 \\ \end{bmatrix}$.
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Answer
$\text{A}^{-1}=\begin{pmatrix} 3 & - 5 \\ -1 & 2 \\ \end{pmatrix}$.
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