Latex quick start

1. Type of article

• article ：article
• The report ：report
• book ：book
• If you write a paper, use “ article ” article
• Chinese articles ： ctexart
• Chinese Fonts ：UTF8
  Code ：

\documentclass[UTF8]{
    ctexart}

2. Introduce macro package

In the paper , May contain formula 、 form 、 Pictures, etc , It needs to be explained at the beginning . That's the way to explain Macro package , Add macro package to write formula , Making forms , Put pictures .
Code ：

\usepackage{
     Macro package 1, Macro package 2,...}
 More commonly used is by mathtools,amsmath,graphicx,array And so on. , Write it out ：
\usepackage{
    mathtools,amsmath,graphicx,array}

3. Start writing documents

Create a “ Document environment ”, In this environment, only the contents of documents are put , What macro packages and document types are outside this

• The establishment of the environment

\begin{
     Environment name }
   The content of the whole paper ！！！
\end{
     Environment name }

• For example, the document environment is

\begin{
    document}
   mathematical modeling 
\end{
    document}

About “\”:

• \begin{ Environment name } \end{ Environment name } yes “ Environmental Science ”. They all use “\” Let's start with , Distinguish between simple words , It is used to control typesetting .
• \document and \usepackage All are “ command ”

document Writing in an environment

• First , A blank line is required between editor segments , In this way, the segmentation of text can be output , Otherwise, the output text is a paragraph （ The two carriage returns are changing sections ）.
• Several commands about Fonts / Environmental Science
  In bold ：\textbf{ Content }
  Font size ：\normalsize\large\Large\LARGE\huge\Huge
  The font size is in an environment or {} In between
  In the middle ：\begin{center} Content \end{center}

Common keywords ：

• Article title and author 、 date ：

\title{
     Title name }
\author{
     The author's name }
\date{
     date }
\maketitle

• The division of chapters

 First level chapter :\section{
     First level chapter name }
 Secondary chapter :\subsection{
     Second level chapter name }
 Level III chapter :\subsubsection{
     Third level chapter name }

• Add a directory

\tableofcontents

• Summary environment

\begin{
    abstract}
   Summary content 
\end{
    abstract}

• List environment

  \begin{
    itemize}
    \item  The first thing 
    \item  The second thing 
  \end{
    itemize}

• About the formula

\begin{
    equation}
   The formula 
\end{
    equation}
%  Formulas in this environment cannot be wrapped 
\begin{
    align*}
  & y=a+b \\
  & y=b+c
\end{
    align*}

Formula environment without automatic numbering , You can add... After the environment name * Or add \nonumber, Such as

\begin{
    equation*}
   The formula 1
\end{
    equation*}
%  perhaps 
\begin{
    equation}\nonumber
   The formula 1
\end{
    equation}

There are also several abbreviations for this environment ：

$$ The formula 1$$
%  perhaps 
\[  The formula  \]

The above is “ The formula between lines ”, That is, insert a formula between two lines , It looks something like this . In line formula $ The formula $
for example ：

 for example ：

 We can know that Newton obtained the relationship between force and mass and acceleration of object as $F=ma$

 The formula between lines can be ：

 We can know that Newton obtained the relationship between force and mass and acceleration of object as ：
\begin{
    equation}
  F=ma
\end{
    equation}

Output results ：

Formula command

Insertion of tables

latex The input of the form in is relatively complex , We don't need too complicated... For the time being , Here is a simple point .
Normal table environment tabular：

\begin{
    tabular}{
    |l|c|r|}
  \hline
   indicators 1 &  indicators 2 &  indicators 3 \\
  \hline
   be at the left side  &  In the middle  &  be at the right 
  \hline
\end{
    tabular}

 Making of three line watch ( Need to use booktabs Macro package )
  \begin{
    table}
    \centering
    \caption{
     subject }
    \begin{
    tabular}{
    cccc}
      \toprule
      & indicators 1 & indicators 2 & indicators 3 \\
      \midrule
       programme 1 & 1 & 0.5 & 100 \\
       programme 2 & 2 & 0.6 & 110 \\
      \bottomrule
    \end{
    tabular}
  \end{
    table}

Picture insertion

  \section{
     The insertion of pictures }
   use figure Environmental Science 
  \begin{
    figure}[H]
    \centering
    \includegraphics[width=8cm,height=3cm]{
    a.png}
    \caption{
     picture }
  \end{
    figure}[H]

Symbol & And \:

• Symbol & It usually means “ alignment ” Something like that , It is usually used when there are multiple rows of data , In case of alignment in a certain position .
• Symbol \\ It's line breaking , This is usually used when multiple lines of data need to wrap . Matrix environment 、 Multiline formulas are often used , Tables often encounter these two symbols .
• If you just want to type in the text & Words , Just use \&, Will be output &. If you want to output \, Then use \verb|\|, There are other special symbols , Most of the output you want is “\ Symbol ”

command label

label It's a label command
label{#1:#2}, among #1 Represents the first parameter , Explain what type this thing is , There are three types ：eq The formula 、tab form 、fig picture ;
#2 That's the name .
For example, name it “niudun”:

  \section{
     command label}
  \begin{
    equation}
    F=ma \label{
    eq:niudun}
  \end{
    equation}

If you want to quote , Just use \ref{eq:niudun}, The place of this command will be replaced by the number of the formula introduced

 By formula (\ref{
    eq:niudun}), We can get ...

Empathy , Tables and pictures can also be quoted in this way , There's no problem at all .