一些表格问题

Question

有人能帮我解决我遇到的一些表格问题吗？基本上，我的表格超出了页面范围（我不太擅长用文本定义表格），如果有人有其他好主意可以让这个表格更整洁，我将不胜感激。这是我正在使用的代码：

\documentclass[a4paper]{article}
\usepackage{amsmath}
\usepackage[english]{babel}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage[margin=1.25in,top=1in,bottom=1in]{geometry}
\makeatletter
\setlength\parindent{0pt}
\usepackage{ amssymb }
\usepackage{booktabs}% http://ctan.org/pkg/booktabs
\newcommand{\tabitem}{~~\llap{\textbullet}~~}
\begin{document}
    \begin{tabular}{llll}
        \toprule
        Topics & General $(n \times n)$ matrix & Hermitian & Real Symmetric \\
        \midrule
        Eigenvalues & Always have $n$ eigenvalues, \\

        & some may be repeated or c.c & All real eigenvalues & Real symmetric  \\[.5\normalbaselineskip]
        Eigenvectors & \\ \tabitem eigenvectors are l.i \\ for distinct eigenvalues \\
                       \tabitem If there are $n$ distinct \\ eigenvalues, then the eigenvectors forms \\ a basis for $C^n$ \\ & Orthogonal for distinct eigenvalues \\ &  They always form an orthonormal matrix \\

        \bottomrule
    \end{tabular}
\end{document}

下面是我遇到的问题的图片：

我不太熟悉在表格中添加较长的文本，因为我主要用它来显示数字，但如果有人能给出一些建议，我将不胜感激。

谢谢

Answer 1

我认为以下内容可能是您正在寻找的，但我不确定。

\documentclass[a4paper]{article}
\usepackage{amsmath}
\usepackage[english]{babel}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage[margin=1.25in,top=1in,bottom=1in]{geometry}
\usepackage{amssymb}
\usepackage{tabularx}
\usepackage{booktabs}% http://ctan.org/pkg/booktabs
\newcommand{\tabitem}{~~\llap{\textbullet}~~}
\begin{document}
\begin{tabularx}{\linewidth}{l>{\raggedright\arraybackslash}X>{\raggedright\arraybackslash}Xl}
    \toprule
    Topics & General $(n \times n)$ matrix & Hermitian & Real Symmetric \\
    \midrule
    Eigenvalues  & Always have $n$ eigenvalues, some may be repeated or c.c    & All real eigenvalues & Real symmetric  \\
    Eigenvectors & \tabitem eigenvectors are l.i for distinct eigenvalues \par
    \tabitem If there are $n$ distinct eigenvalues, then the eigenvectors forms a basis for $C^n$             & Orthogonal for distinct eigenvalues They always form an orthonormal matrix \\
    \bottomrule
\end{tabularx}
\end{document}