设 $\boldsymbol{A}=\left(\begin{array}{rrr}1 & 1 & 1 \\ 1 & 1 & -1 \\ 1 & -1 & 1\end{array}\right), \boldsymbol{B}=\left(\begin{array}{rrr}1 & 2 & 3 \\ -1 & -2 & 4 \\ 0 & 5 & 1\end{array}\right)$, 求 $\boldsymbol{A}^{\mathrm{T}} \boldsymbol{B}$ 与 $3 \boldsymbol{A} \boldsymbol{B}-2 \boldsymbol{A}$
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