\[ \begin{array}{ll} 3 & -4 \end{array} \] यदि \( \mathrm{A}=\begin{array}{ll}1 & 1 \\ 2 & 0\end...
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\[
\begin{array}{ll}
3 & -4
\end{array}
\]
यदि \( \mathrm{A}=\begin{array}{ll}1 & 1 \\ 2 & 0\end{array} \) और \( \mathrm{B}=\begin{array}{llll}2 & 1 & 2 \\ 1 & 2 & 4\end{array} \) हो तो सत्यापित कीजिए कि \( (\mathrm{BA})^{2} \neq \mathrm{B}^{2} \mathrm{~A}^{2} \).
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