Latex笔记（一)

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\documentclass{article}\begin{document} Hello,\LaTeX world\end{document}

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\documentclass[UTF8]{ctexart}\begin{document}こんにちは,Latex世界\end{document}

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\documentclass[UTF8]{ctexart}\title{你们吼啊}\author{Huramkin}\begin{document}\maketitle\section{NAIVE}年轻人，too young too simple\subsection{你们有一个好}\paragraph{跑的快}跑的比谁都快\subparagraph{天天}天天想搞个大新闻\subparagraph{Excited!}一颗赛艇\subsubsection{谈笑风生}曰。。曰\subsection{LaTeX}\paragraph{坠吼}LaTeX是坠吼的\subparagraph{滋磁八国语言}こんにちは,Latex世界\end{document}

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\documentclass{article}\usepackage{amsmath}\begin{document}%三种方式插入公式$S=\pi r^2$.\[ S=\pi r^2 \]\begin{equation}S=\pi r^2\end{equation}%根式和分式$\sqrt{x_2}$, $\frac{1}{4}$\[ \sqrt{x_3}, \]\[ \frac{1}{4} \]%数学常用运算符\[ \pm\; \times \; \div\; \cdot\; \cap\; \cup\;\geq\; \leq\; \neq\; \approx \; \equiv \]%求和与极限$ \sum_{i=1}^n i\quad \prod_{i=1}^n $$ \sum\limits _{i=1}^n i\quad \prod\limits _{i=1}^n $\[ \lim_{x\to0}x^2 \quad \int_a^b x^2 dx \]\[ \lim\nolimits _{x\to0}x^2\quad \int\nolimits_a^b x^2 dx \]%积分符号\[ \iint\quad \iiint\quad \iiiint\quad \idotsint \]%括号\[ \Biggl(\biggl(\Bigl(\bigl((x)\bigr)\Bigr)\biggr)\Biggr) \]\[ \Biggl[\biggl[\Bigl[\bigl[[x]\bigr]\Bigr]\biggr]\Biggr] \]\[ \Biggl \{\biggl \{\Bigl \{\bigl \{\{x\}\bigr \}\Bigr \}\biggr \}\Biggr\} \]\[ \Biggl\langle\biggl\langle\Bigl\langle\bigl\langle\langle x\rangle\bigr\rangle\Bigr\rangle\biggr\rangle\Biggr\rangle \]\[ \Biggl\lvert\biggl\lvert\Bigl\lvert\bigl\lvert\lvert x\rvert\bigr\rvert\Bigr\rvert\biggr\rvert\Biggr\rvert \]\[ \Biggl\lVert\biggl\lVert\Bigl\lVert\bigl\lVert\lVert x\rVert\bigr\rVert\Bigr\rVert\biggr\rVert\Biggr\rVert \]%省略号\[ x_1,x_2,\dots ,x_n\quad 1,2,\cdots ,n\quad\vdots\quad \ddots \]%矩阵\[ \begin{pmatrix} a&b\\c&d \end{pmatrix} \quad\begin{bmatrix} a&b\\c&d \end{bmatrix} \quad\begin{Bmatrix} a&b\\c&d \end{Bmatrix} \quad\begin{vmatrix} a&b\\c&d \end{vmatrix} \quad\begin{Vmatrix} a&b\\c&d \end{Vmatrix} \]%小矩阵A little matrix $ ( \begin{smallmatrix} a&b\\c&d \end{smallmatrix} ) $.\end{document}

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\documentclass{article}\usepackage{mhchem}\usepackage{chemfig}\begin{document}\ce{Fe^{II}Fe^{III}2O4}\ce{Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2-}\chemfig{*5(-=--=)}\chemfig{A-B(-[1]W-X)(-[6]Y-[7]Z)-C}\end{document}