old.tex (3200B)
1 \documentclass[10pt,a4paper]{article} 2 \usepackage[utf8]{inputenc} 3 \usepackage{amsmath} 4 \usepackage{amsfonts} 5 \usepackage{amssymb} 6 \usepackage{amsthm} 7 \usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry} 8 9 \usepackage{enumitem} 10 \title{Latex Example Live} 11 \author{Sebastiano Tronto} 12 \date{20-02-2021} 13 14 \newcommand{\reals}{\mathbb{R}} 15 \DeclareMathOperator{\sinus}{sinus} 16 17 18 \newtheorem{mythm}{My Theorem}[section] 19 20 \theoremstyle{definition} 21 \newtheorem{prop}[mythm]{Proposition} 22 \newtheorem{defi}{Definition} 23 24 \theoremstyle{remark} 25 \newtheorem*{warning}{Achtung} 26 27 \usepackage{xcolor} 28 29 30 \begin{document} 31 32 \maketitle 33 34 \section{Introduction} 35 36 {\color{pink} Hello, world! 37 38 This is a comment} 39 40 \texttt{This looks like computer code} 41 42 \section{Text} 43 44 \textbf{This sentence is in boldface} 45 46 \underline{\textit{italicized} maybe in a sentence \textbf{something}} 47 48 \underline{\textit{one inside the other}} 49 50 \emph{also italicized???} 51 52 This is an important sentence, maybe a quote or something, and this \emph{word} is very important. Let's make this sentence longer than one line. 53 54 {\Huge Large words} 55 56 %\appendix 57 58 \section{Math mode} 59 60 This is an inline formula \( \displaystyle \sum_i \frac{i}{22} \), it appears within the text 61 62 This is a displaystyle formula \[ \textstyle \sum_{\alpha=0}^{2^{10}} \frac2 \alpha{22} \] it appears on its own line 63 64 How sqrt works: \( \sqrt[\phi]{25} \) 65 66 67 68 \begin{flalign} 69 \label{eq} 70 e^x &= \left(\sum_{i=0}^\infty \frac{x^i}{i!} \right) = & \\ 71 &= \left( 1 + x + \frac{x^2}2 \right)+ \frac{x^3}{6} + \cdots \nonumber 72 \end{flalign} 73 74 \[ 75 \left\{ x \in \reals \quad \text{such that} \quad \frac{ \sinus(x)}{x^2}>0 \right\}\reals 76 \] 77 78 \[ \sum_i \] 79 80 The first equation we wrote is \eqref{eq} 81 82 \section{Environments} 83 84 \subsection{Lists} 85 \label{subsectionLists} 86 87 \begin{itemize} 88 \item One \textbf{item} 89 \item Another \(2+2=4\) 90 \item a third one \[\sum_{i=0}^n\] 91 \item A sublist: 92 \begin{itemize} 93 \item[+] First subitem 94 \item[+] and so on 95 \end{itemize} 96 \item Again in the main list 97 \end{itemize} 98 99 \begin{enumerate}[label=\Roman*] 100 \item One 101 \item Two 102 \item Actually three 103 \item Three (or not) 104 \end{enumerate} 105 106 \subsection*{Tables} 107 108 Let's write a table: 109 110 \vspace{1cm} 111 \begin{tabular}{r||l|c} 112 \hline 113 This is a table & second column & third column \\ 114 \hline 115 Things & a & \( 2+2 = 4 \)\\ 116 \hline 117 more things & b & c 118 \end{tabular} 119 120 \vspace{1cm} 121 \[ 122 \left(\begin{array}{cc} 123 \int_0^1 e^x & \frac{2}{25} \\ 124 0 & 0 \\ 125 1111 & 234\alpha 126 \end{array}\right) 127 \] 128 129 \[ 130 \begin{pmatrix} 131 \int_0^1 e^x & \frac{2}{25} \\ 132 0 & 0 \\ 133 1111 & 234\alpha 134 \end{pmatrix} 135 \] 136 137 \[ 138 \begin{pmatrix} 139 1 & 2\\ 140 3 & 4 141 \end{pmatrix} 142 \overset{L2\rightarrow L2+L3}\longrightarrow 143 \begin{pmatrix} 144 1 & 2\\ 145 4 & 6 146 \end{pmatrix} 147 \] 148 149 \section{Last section} 150 151 In section \ref{subsectionLists} we saw how to write lists 152 153 \begin{mythm}[Gauss] 154 The equation \(2+x=4\) is true for \(x=2\). 155 \end{mythm} 156 157 \begin{prop} 158 A less important fact 159 \end{prop} 160 161 \begin{defi} 162 a definition 163 \end{defi} 164 165 \begin{mythm} 166 Another important fact. 167 \end{mythm} 168 169 \begin{warning} 170 It is a common mistake to think that \(2+2=5\) 171 \end{warning} 172 \[\binom45\] 173 174 \[ 2 \nmid 10 \] 175 176 \end{document}