Let $\mathbf{A}=\left(\begin{array}{cc}2 & 1 \\ -3 & -1\end{array}\right)$ Find $\mathbf{A}^{-1}$

Short Answer

Let $\mathbf{A}=\left(\begin{array}{cc}2 & 1 \\ -3 & -1\end{array}\right)$ . Find $\mathbf{A}^{-1}$ .