![A = 矩阵(B)= 矩阵(C)](https://linux22.com/image/364985/A%20%3D%20%E7%9F%A9%E9%98%B5%EF%BC%88B%EF%BC%89%3D%20%E7%9F%A9%E9%98%B5%EF%BC%88C%EF%BC%89.png)
答案1
正如 Bernard 所说,使用环境就足够简单了bmatrix
。
代码:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\Huge
\[
\sigma=
\begin{bmatrix}
\sigma_{xx} & \sigma_{xy} & \sigma_{xz} \\
\sigma_{xy} & \sigma_{yy} & \sigma_{yz} \\
\sigma_{xz} & \sigma_{yz} & \sigma_{zz} \\
\end{bmatrix}=
\begin{bmatrix}
\sigma_{xx} & \tau_{xy} & \tau_{xz} \\
\tau_{xy} & \sigma_{yy} & \tau_{yz} \\
\tau_{xz} & \tau_{yz} & \sigma_{zz} \\
\end{bmatrix}
\]
\end{document}
产量: