One · MEINFO

这是一张图片测试

$$ \begin{vmatrix} a_{11} & a_{12} & \cdots & a_{1n} \\ a_{21} & a_{22} & \cdots & a_{2n} \\ \vdots & \vdots & \ddots & \vdots \\ a_{n1} & a_{n2} & \cdots & a_{nn} \end{vmatrix} $$

1\begin{vmatrix}
2a_{11} & a_{12} & \cdots & a_{1n} \\
3a_{21} & a_{22} & \cdots & a_{2n} \\
4\vdots & \vdots & \ddots & \vdots \\
5a_{n1} & a_{n2} & \cdots & a_{nn}
6\end{vmatrix}

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