• 试题 ID 37656


设 $P=\left(\begin{array}{lll}1 & 0 & 0 \\ 1 & 1 & 0 \\ 1 & 1 & 1\end{array}\right), Q=\left(\begin{array}{lll}0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0\end{array}\right)$ 满足 $P X P+Q X Q=P X Q+Q X P +P^2-P Q$ ,求 $X$ .
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解析:

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