latex　表格“tabular”跨多行笔记_latex tabular package

\documentclass[]{article}
\usepackage{multirow}
\begin{document}
\renewcommand{\multirowsetup}{\centering}  
    \begin{tabular}{|l|l|l|l|} 
       	\hline  
       	\multirow{4}{2cm}{This is a demo table}  & a & \multirow{4}{2cm}{This is another one} & \\ 
       	& b &  & \\ 
       	& c &  & \\ 
       	& d & & \\ 
       	\hline 
     \end{tabular} 
\end{document}
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显示：

另外方法：

\documentclass{article}
\usepackage{amsmath,varwidth,array,ragged2e}
\newcolumntype{L}{>{\varwidth[c]{\linewidth}}l<{\endvarwidth}}
\newcolumntype{M}{>{$}l<{$}}
\def\ds{\mathrm{d}s}%  don't know what your \ds should be ....
\begin{document}

\def\arraystretch{1.7}
\begin{tabular}{rMrL}
(A) & \ds u=\sqrt{x^2+y^2} &(B) & $\ds u=\sqrt{x^4+y^4}$\tabularnewline
(C) & \ds u=\sqrt[3]{xy}   &(D) & $\ds u=\sqrt[3]{x^2+y^2}$\tabularnewline
(E) & \ds u=\sqrt[3]{x^4+y^4} & (F) & 
  \[ u=\begin{cases}e^{\frac{-1}{x^2+y^2}}; &x^2+y^2\neq 0\\ 0; &x^2+y^2=0\end{cases} \] \tabularnewline
(G) & \ds u=\sqrt[3]{x}\sin y & (H) & $\ds u=\sqrt[3]{y}\tan x$
\end{tabular}

\end{document}
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显示：

另外一种：

\documentclass[oneside]{article}
\usepackage{chngpage}
\usepackage{array}
\begin{document}
\begin{adjustwidth}{-1cm}{-1cm}
 \begin{tabular}{|p{.2\textwidth}| p{.2\textwidth}| m{.7\textwidth}|}
 \hline
  new & old &   all boring, all boring, all boring, all boring, all boring, all boring, all boring, all boring, all boring, all boring, all boring, all boring, all boring, all boring, \\ \hline
 \end{tabular}
\end{adjustwidth}
\end{document}
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