What is the inverse of matrix A=[3−241]A = \begin{bmatrix} 3 & -2 \\ 4 & 1 \end{bmatrix}A=[34−21]?
111[1−243]\frac{1}{11}\begin{bmatrix} 1 & -2 \\ 4 & 3 \end{bmatrix}111[14−23]
[132−41]\begin{bmatrix} \frac{1}{3} & 2 \\ -4 & 1 \end{bmatrix}[31−421]
15[12−43]\frac{1}{5}\begin{bmatrix} 1 & 2 \\ -4 & 3 \end{bmatrix}51[1−423]
111[12−43]\frac{1}{11}\begin{bmatrix} 1 & 2 \\ -4 & 3 \end{bmatrix}111[1−423]
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