latex BASICS HR

\documentclass[a4paper, 12pt]{article}
\usepackage[croatian]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath,amssymb,amsthm}
\usepackage{xcolor}
\usepackage{hyperref}
\usepackage{graphicx}
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\title{TITLE}
\author{AUTHOR}
\date{DATE}
\DeclareMathOperator{\op}{op}
\begin{document}
\maketitle
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\begin{abstract}
\begin{center}
ABSTRACT / SAŽETAK \\
\hypertarget{link}{\LaTeX}
\end{center}
\end{abstract}
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\section{ NEW SECTION TITLE}
xxx... \underline{UNDERLINE TEXT} xxx.  \\
xxx... \textit{ITALIC TEXT}              xxx.  \\
xxx... \textbf{BOLD TEXT}               xxx.  \\
...NEW LINE

...NEW PARAGRAPH.
\begin{verbatim}
$ & % # _ { }
\end{verbatim}
xxx...\verb" \$ \& \% \# \_ \{ \}"  \\
xxx...  2\textbackslash3 \\
xxx... {\color{blue}{xxx}}
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\section{NEW SECTION TITLE}
\subsection{New subsection title}
xxx...\footnote{ footnote} \\
\verb"\newpage"
\newpage
\noindent Itemize: (\verb"\noindent")
\begin{itemize}
\item[a)] item a)
\item[b)] item b)
\item[*.] item *.
\end{itemize}
Enumerate:
\begin{enumerate}
\item item1
\item item2
\item item3
\end{enumerate}
\subsection {New subsection title}
\tiny {tiny } \scriptsize {scriptsize } \footnotesize {footnotesize } \small {small } \\
\large {large} \Large {Large } \LARGE {LARGE } \huge {huge } \Huge {Huge} \\
\normalsize{normalsize} \\
Tabular: (\verb"\begin{center}") \\
\begin{center}
\begin{tabular}{|l r|c|}
\hline
left & right & center \\
\hline
hline & hline & hline \\
nohline & nohline & nohline \\
\hline
\end{tabular}
\end{center}
\begin{flushright}
flushright
\end{flushright}
\fbox{fbox}
\[\dots\]
\newpage
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\section{Maths}
Inline maths: $1+1=2$, Display maths:
\[1+1=2\]
alpha, delta i Delta; partial, psi: $\alpha$, $\delta$ i $\Delta$; $\partial$, $\psi$: $\dots$\\
Eksponent, indeks, razlomak, korijen...$\frac{\pi^{x}}{\sqrt[3]{a_2}}$
\[\frac{\pi^{x}}{\sqrt[3]{a_2}}\]
\begin{verbatim}
\sin \cos \int{\infty} \limits\sum \nolimits\sum \lim
\end{verbatim}
\[ \sin \cos \int_{-\infty}^{+\infty} \limits\sum_2^7 \nolimits\sum_2^7 \lim \]
\begin{verbatim}
\! _ \, \: \; \quad \qquad
\end{verbatim}
\[ 0\!O, 0O, 0\,O, 0\:O, 0\;O, 0\quad O, 0\qquad O \]
\textbf{Akcenti:} overline, hat, check, tilde, acute, grave, dot, ddot, vec, ...
\[\overline{o+L}, \hat{H}, \check{c}, \tilde{T}, \acute{a}, \grave{g}, \dot{d}, \ddot{dd}, \vec{v}, \dots\]
Zagrade:  $[], (), ||;$ Escape Zagrade: $\|\|, \{\};$ angle: $\langle,\rangle$ + \verb"\left \right" za prilagodbu; \\
Odnosno; bigl biggl Bigl Biggl + ( = $\bigl(\biggl(\Bigl(\Biggl($ ...
\[ \text{text u display okolini}\]
* a circ b $a\circ b$; tj. \verb"\mathbin" i \verb"\mathrel" za custom bin.op. i relaciju. \\
* $\frac12, \tfrac12, \dfrac12$ frac, tfrac, dfrac; odnosno moze i unutar npr begin\{small\} \\ \\
\textbf{math fontovi: } \verb"\mathX" X$\in$\{it,rm,bf,sf,tt,cal,bb,frak\} $\mathit I, \mathrm R, \mathbf{Bf}, \mathsf{Sf}, \mathtt T,\mathcal C, \mathbb B, \mathfrak F$\\ \\
\verb"?_{\substack{...\\...}}" i \verb"\sideset{^a_b}{^c_d}?": (?prod, ?bigcup)
\[\prod_{\substack{i=1 \\ i\ne5}}^{\infty}, \sideset{^a_b}{^c_d}\bigcup\]
\verb"\overset{a}{+}", \verb"\underset{b}{\cdot}", \verb"\overbrace{...}^n", \verb"\underbrace{...}_k"
\[\overset{a}{+}, \underset{b}{\cdot}, \overbrace{1+2+\dots+n}^n, \underbrace{1,2,3,\dots,k}_k\]
\v{c}
\newpage
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\section{\AmS \LaTeX}
Naredbe: \verb"\newcommand{\name}[n]{code}", $\#1,\#2,\dots\#n\in\text{code}$;
\begin{verbatim}
\name{#1}{#2}...{#n} = code
\end{verbatim}
Operatori: \verb+\DeclareMathOperator{\op}{op}+ : \verb"$\op(x)$" = $\op(x)$
\subsection{okoline and more}
\begin{itemize}
\item[] equation okolina = \verb"\[\]" + numeracija
\item[] align okolina = niz formula poravanih s \& i odvojenih s \verb"\\" ; ?koristi \verb"\tag*{} \notag" za custom numeraciju; \verb"\intertext" za text između formula; \verb"subequations" nadokolinu za zajedničku numeraciju niza formula; etc.
\item[] aligned okolina = align unutar/među tekstom. (zahtjeva mat. okolinu; npr.  \$\$ , \verb"\[\]",...)
\item[] gather/gathered okoline = centrirani niz formula.
\item[] LABEL, EQREF: domah unutar okoline: \verb"\label{eq:lab}"; kasnije: \verb"\eqref{eq:lab}"
\item[] REF; \verb"\label{sek:uvod}" nakon \verb"\section{Uvod}"; kasnije: \verb"\ref{sek:uvod}"
\item[] PAGEREF\{oznka\}
\item[] Promjena numeracije; brojač equationa sada broji section: \verb"\numberwithin{equation}{section}"
\item[] okoline multiline i split (samostalna i unutar\_matematička) =razbijemo formulu u redove sa \verb"\\", kod split još: \& za poravnavanje prekida
\item[] okolina cases: (unutar equation* poslje $|x|=$); \& za razdvoj uvjeta; \verb"\\" za novi case;
\end{itemize}
\begin{equation*}
|x|=
\begin{cases}
x & \text{ako } x\ge 0\\
-x & \text{ako } x\le 0
\end{cases}
\end{equation*}
Matrične okoline: Xmatrix, X$\in$\{\_,p,b,v,V,B,small\} ;  (unutar \verb"\boxed{}")
\[
\boxed{
\begin{matrix}
1 & 2 \\ 3 & 4
\end{matrix}
,
\begin{pmatrix}
1 & 2 \\ 3 & 4
\end{pmatrix}
,
\begin{bmatrix}
1 & 2 \\ 3 & 4
\end{bmatrix}
,
\begin{vmatrix}
1 & 2 \\ 3 & 4
\end{vmatrix}
,
\begin{Vmatrix}
1 & 2 \\ 3 & 4
\end{Vmatrix}
,
\begin{Bmatrix}
1 & 2 \\ 3 & 4
\end{Bmatrix}
,
\begin{smallmatrix}
1 & 2 \\ 3 & 4
\end{smallmatrix}
}
\]
Btw, \verb"\left.\right}" za jednostranu \} :
\[\left.\frac{1}{2}\right\}\]
\newpage
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\section*{predavanje V.}
\subsection*{Okoline...}
Custom simple okoline:
\newtheorem{thm}{Teorem}
\verb"\newtheorem{thm}{Teorem}":
\begin{thm}
thm okolina
\end{thm}
\noindent Nenumerirani:
\newtheorem*{rol}{Rolleov teorem}
\verb"\newtheorem*{rol}{Rolleov teorem}": (\verb"\begin{rol}[haha]")
\begin{rol}[haha]
rol okolina
\end{rol}
\noindent  Zajedničko numeriranje:
\newtheorem{kor}[thm]{Korolar}
\verb"\newtheorem{kor}[thm]{Korolar}":
\begin{thm}
kor okolina
\end{thm}
\noindent Stilovi okolina (set prije newtheorem): \verb"\theoremstyle{...}" budu remark, definition, etc.
\subsection*{plutajuci objekti}
tabular unutar \verb"begin{table}[htpb]" + \verb"\caption{this is caption}" izvan tabular\&center, unutar table + \verb"\label{tab:tab1}" (\verb"\begin{center}") :
\begin{table}[htpb]
\begin{center}
\begin{tabular}{c|c}
center & center \\
\hline
tablica & jedan \\
\end{tabular}
\end{center}
\caption{this is caption}
\label{tab:tab1}
\end{table}
\\
Ovdje vidis tablicu \ref{tab:tab1} ... \\ \\
slika unutar Figure: \verb"\begin{figure}..." ; \verb"\includegraphics[width=,angle=,scale=]{image.png}" (+koristi caption;label,ref) \\ \\
\verb"\scalebox{2}[4]{Hello!}",\verb"\scalebox{4}[2]{Hello!}" \\
\scalebox{2}[4]{Hello!}\scalebox{4}[2]{Hello!} \\ \\
\subsection*{Bibliografija (Literatura)}
\begin{verbatim}
\begin{thebibliography}{1}
\bibitem{mat1} D.Julić,....
\bibitem{mat2} Š.Ungar,....
\end{thebibliography}
\end{verbatim}
\begin{thebibliography}{1}
\bibitem{mat1} D.Julić,....
\bibitem{mat2} Š.Ungar,....
\end{thebibliography}
Koritsimo \verb"\cite{mat1}" da bi citirali: \cite{mat1}
\subsection* Hyperaktivnost

Korisitimo\verb"\href" za linkove, te \verb"\hypertarget{link1}{text}" i \verb"\hyperlink{link1}{text}" za linkove unutar \hyperlink{link}{dokumenta}.
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\newpage
Table of contents:
\tableofcontents
\end{document}