১.
$\mathrm{A}=\left[\begin{array}{cc}5 & 2 \\ -3 & 1\end{array}\right]$ হলে, $\mathrm{A}^{-1}$ এর মান কোনটি?
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$\frac{1}{5}\left[\begin{array}{rr}3 & -1 \\ 1 & 2\end{array}\right]$
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$\frac{1}{11}\left[\begin{array}{rr}1 & -2 \\ 3 & 5\end{array}\right]$
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$-\frac{1}{11}\left[\begin{array}{rr}-1 & 2 \\ 5 & -3\end{array}\right]$
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$\frac{1}{3}\left[\begin{array}{ll}1 & -2 \\ 3 & -1\end{array}\right]$