longtable 中同一列的对齐方式不同

Question

我有一张长桌，上面有这一排

\begin{center}
\renewcommand{\arraystretch}{1.75}
\begin{longtable}{c|c|c}
...
$x^\alpha$ & $\frac{x^{\alpha+1}}{\alpha+1}+c$ & \multicolumn{1}{l}{$\left\{\begin{tabular}{@{\ }l@{}} 1 \\ 2 \\ 3
\end{tabular}\right.$} \\ \hline
...
\end{longtable}
\end{center}

我需要将括号放在列的左侧，但我希望将 1、2、3 放在列的中间。该怎么做？

谢谢你！

Answer 1

一种可能性是：

\documentclass{report}
\usepackage{longtable}

\newcommand\MyBrace[1]{%
  \makebox[0pt][l]{$\left\lbrace\vphantom{#1}\right.$}\hfill$#1$\hfill\null}

\begin{document}

\begin{longtable}{c|c|c}
...
$x^\alpha$ & $\frac{x^{\alpha+1}}{\alpha+1}+c$ & \MyBrace{\begin{tabular}{@{\ }c@{}} 1 \\ 2 \\ 3 \\ 4
\end{tabular}} \\ \hline
a & b & some text and some other text
\end{longtable}

\end{document}