我输入了下面这个矩阵,就出现了警告:[chktex] 44: User Regex,请问这是什么意思?如何处理?
我想实现的效果如下:
\begin{align*}
\left[
\begin{array}{ccc|ccc|ccc}
4 & -1 & 0 & -1 & 0 & 0 & 0 & 0 & 0 \\
-1 & 4 & -1 & 0 & -1 & 0 & 0 & 0 & 0 \\
0 & -1 & 4 & 0 & 0 & -1 & 0 & 0 & 0 \\
\hline
-1 & 0 & 0 & 4 & -1 & 0 & -1 & 0 & 0 \\
0 & -1 & 0 & -1 & 4 & -1 & 0 & -1 & 0 \\
0 & 0 & -1 & 0 & -1 & 4 & 0 & 0 & -1 \\
\hline
0 & 0 & 0 & -1 & 0 & 0 & 4 & -1 & 0 \\
0 & 0 & 0 & 0 & -1 & 0 & -1 & 4 & -1 \\
0 & 0 & 0 & 0 & 0 & -1 & 0 & -1 & 4
\end{array}
\right]
\left[
\begin{array}{c}
u_{11} \\
u_{21} \\
u_{31} \\
u_{12} \\
u_{22} \\
u_{32} \\
u_{13} \\
u_{23} \\
u_{33}
\end{array}
\right]
\end{align*}
导语部分加入 \usepackage{tabularray}
\[
\left[
\begin{tblr}{ccc|ccc|ccc}
4 & -1 & 0 & -1 & 0 & 0 & 0 & 0 & 0 \\
-1 & 4 & -1 & 0 & -1 & 0 & 0 & 0 & 0 \\
0 & -1 & 4 & 0 & 0 & -1 & 0 & 0 & 0 \\
\hline
-1 & 0 & 0 & 4 & -1 & 0 & -1 & 0 & 0 \\
0 & -1 & 0 & -1 & 4 & -1 & 0 & -1 & 0 \\
0 & 0 & -1 & 0 & -1 & 4 & 0 & 0 & -1 \\
\hline
0 & 0 & 0 & -1 & 0 & 0 & 4 & -1 & 0 \\
0 & 0 & 0 & 0 & -1 & 0 & -1 & 4 & -1 \\
0 & 0 & 0 & 0 & 0 & -1 & 0 & -1 & 4
\end{tblr}
\right]
\left[
\begin{tblr}{c}
u_{11} \\
u_{21} \\
u_{31} \\
u_{12} \\
u_{22} \\
u_{32} \\
u_{13} \\
u_{23} \\
u_{33}
\end{tblr}
\right]
\]