Latex matrix is simple to use

https://www.bilibili.com/video/BV1Sb411s7cq?p=11 Learn from the video
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Environmental Science

You need to import a macro package
\usepackage{amsmath}

Easy to use

\documentclass{ctexart}\usepackage{amsmath}\begin{document}	\[    % Use brackets to introduce the formula between lines 		\begin{matrix}			0&1\\			1&0		\end{matrix}	\]\end{document}

effect ：

There are no brackets .
== use & Separator column , use // Separate lines ==

Various delimiters （ A vertical bar , parentheses , brackets ……）

\documentclass{ctexart}\usepackage{amsmath}\begin{document}	\[		\begin{matrix}  % There are no brackets 			0&1\\			1&0		\end{matrix}	\]		\[		\begin{pmatrix}  % parentheses 			0&1\\			1&0		\end{pmatrix}	\]		\[		\begin{bmatrix}  % brackets 			0&1\\			1&0		\end{bmatrix}	\]		\[		\begin{Bmatrix}  % Curly braces 			0&1\\			1&0		\end{Bmatrix}	\]			\[		\begin{vmatrix}  % Single vertical line 			0&1\\			1&0		\end{vmatrix}	\]		\[		\begin{Vmatrix}  % Double vertical line 			0&1\\			1&0		\end{Vmatrix}	\]\end{document}

effect ：

Ellipsis in matrix

	\[		\begin{bmatrix}  % brackets 			a_{11} & \dots & a_{1n}\\			& \ddots & \vdots \\			a_{n1} & & a_{nn}		\end{bmatrix}_{n \times n}	\]

effect ：

\dots\ddots\vdots

In line small matrix smallmatrix

	% In line small matrix (smallmatrix)	 Environmental Science 	 The plural $z=(x,y)$ You can also use matrices 	\begin{math}		\left( % You need to manually add the left bracket 		\begin{smallmatrix}			x  & -y \\	y & x		\end{smallmatrix}		\right) % You need to add the right bracket manually 	\end{math} To express .