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How can I make these arrows that point to something in the text? enter image description here

Phelype Oleinik
  • 70,814
Danimenru
  • 11

1 Answers1

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Welcome to TeX-SE! I'd like to advertize tikzmark for that, which comes with the \tikzmarknode macro. (EDIT: Arrows reversed, big thanks to @KJO!)

\documentclass{article}
\usepackage{mathtools}
\DeclareMathOperator{\Gr}{Gr}
\usepackage{tikz}
\usetikzlibrary{tikzmark}
\begin{document}
$\Gr(\tikzmarknode{f}{f})=\left\{\bigl(x,f(x)\bigr);~x\in A\right\}$
\begin{tikzpicture}[overlay,remember picture]
\draw[latex-] (f) |- ++(3em,-1.6em) node[right]{grafico de $f$};
\end{tikzpicture}

\bigskip\bigskip
$\displaystyle\lim_{\begin{smallmatrix}x\to x_0\\
x>x_0\end{smallmatrix}}f(x)=\tikzmarknode{L}{L}\dots$
\begin{tikzpicture}[overlay,remember picture]
\draw[latex-] (L) |- ++(3em,-1.6em) node[right]{numero real};
\end{tikzpicture}
\end{document}

enter image description here

  • 1
    Me again :-) OP gave example with arrowheads other end of leaders, how can leaders be most easily reversed I got a result with [-latex,<-] but was that the correct way. PS worth mentioning two passes needed it threw me one or twice :-) –  Mar 07 '19 at 19:43
  • @KJO Thanks! Really appreciate it! (Yes, I am not looking very carefully after I think that the conceptual problem is solved, but I definitely should.) –  Mar 07 '19 at 19:45