The shell command<br />"/lrn-mdl-prod/build/71719/filter/tex/mimetex.linux" -e "/lrn-mdl-prod/moodledata/filter/tex/d52e30b32a57962842c7698fa6780005.gif" -- '\Large  \begin{split}                 &(\mathbf{M}_{+A}\otimes\mathbf{I}_B)\left( \dfrac{1}{2}|0\rangle\langle0|_A\otimes|0\rangle\langle0|_B + \dfrac{1}{2}|1\rangle\langle1|_A\otimes|1\rangle\langle1|_B \right)(\mathbf{M}_{+A}\otimes\mathbf{I}_B) \\                 &= \dfrac{1}{2}\left\{ |+\rangle\langle+|_A|0\rangle\langle0|_A|+\rangle\langle+|_A\otimes|0\rangle\langle0|_B + |+\rangle\langle+|_A|1\rangle\langle1|_A|+\rangle\langle+|_A\otimes|1\rangle\langle1|_B \right\} \\                 &= \dfrac{1}{4}\left\{|+\rangle\langle+|_A\otimes|0\rangle\langle0|_B + |+\rangle\langle+|_A\otimes|1\rangle\langle1|_B \right\}. \end{split}'<br />returned status = 1<br />
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