# Equações Matemáticas

16 views

### Janderson Carvalho

Feb 8, 2023, 6:12:16 PMFeb 8
Existe código para fazer esse "círculo" que destaca a equação?

--
Atenciosamente,
Janderson Carvalho

### Emílio Kavamura

Feb 8, 2023, 8:00:59 PMFeb 8
to Latex-br
Exatamente esta ferramenta eu não conheço, mas tem o zoom do tikz

https://tex.stackexchange.com/questions/59705/magnifying-part-of-a-picture-similar-to-tikz-spy-library

### Emílio Kavamura

Feb 8, 2023, 9:09:01 PMFeb 8
to Latex-br
\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{spy}

\begin{document}
\begin{tikzpicture}[spy using outlines={circle,yellow,magnification=5,size=.5cm, connect spies}]
\node {\pgfimage[height=2cm]{tux}};
\spy on (0,0.01) in node [left] at (1,.5);
\end{tikzpicture}

\begin{tikzpicture}[spy using outlines={circle,yellow,magnification=2,size=.5cm, connect spies}]
\node {$x^2+y^3+ \int\limits_0^a dx$};
\spy on (-.05,0.15) in node [left, fill = white, opacity=.8] at (0.27,0.25);
\end{tikzpicture}

\end{document}