latex学习

\documentclass{article}
\usepackage{ctex}
 
\begin{document}

\section{文字}
特可爱模板
\section{数学}
\[
    a^2=b^2+c^2
\]
\end{document}

\documentclass[UTF8]{ctexart}

\title{杂谈勾股定理}
\author{张三}
\date{\today}

\bibliographystyle{plain}

\begin{document}

\maketitle
\tableofcontents
\section{勾股定理在古代}
\section{勾股定理的近代形式}
\bibliography{math}

\end{document}

\documentclass[UTF8]{ctexart}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amsthm}
\usepackage{graphicx}
\usepackage{amssymb}
\usepackage{bm}
\usepackage{titlesec}
\usepackage{graphicx}
\usepackage{booktabs}
\usepackage{multirow}
\usepackage{booktabs}
\usepackage{subfig}
\usepackage{hyperref}
\usepackage{fancyhdr}
\usepackage{pdfpages}
\usepackage{hyperref}
\usepackage{geometry}
\usepackage{CJK}

\title{杂谈勾股定理}
\author{张三}
\date{\today}

\bibliographystyle{plain}

\begin{document}

\maketitle
\tableofcontents
\section{勾股定理在古代}
\section{勾股定理的近代形式}

\bibliography{math}

\end{document}