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LaTeX
Compile Error
1. Check the configured compile mode in settings
2. Check the LaTeX log file:
MathJax
\begin{bmatrix} a_1 \\ a_2 \\ \end{bmatrix} \bigodot \begin{bmatrix} b_1 \\ b_2 \\ \end{bmatrix} = \begin{bmatrix} a_1 \cdot b_1 \\ a_2 \cdot b_2 \\ \end{bmatrix}