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$p = [\begin{matrix} - 1 & 1 \\ 1 & 1 \end{matrix}]$ হলে, $p^{- 1}$ এর মান কোনটি?

[\begin{matrix} 0 & 1 \\ 1 & 0 \end{matrix}]

[\begin{matrix} 1 & 1 \\ - 1 & 1 \end{matrix}]

[\begin{matrix} \frac{1}{2} & 0 \\ 0 & \frac{1}{2} \end{matrix}]

[\begin{matrix} - \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{matrix}]

ANS : 4

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