Ciao a tutti. Vorrei sapere perché nel codice seguente l’opzione “grid” non funziona… 🙁
`
\documentclass{article}
\usepackage{tikz,pgfplots}
\begin{document}
\begin{tikzpicture}[font=\small]
\begin{axis} [width=0.55\textwidth,scale mode=scale uniformly,
axis lines=middle,
xmin=-5,xmax=4,ymin=-5,ymax=5,
enlargelimits,
xtick=\empty,
ytick=\empty,
xlabel=$x$,
ylabel=$y$,grid]
\draw (axis cs:-2,-4) — (axis cs:1,-4);
\draw (axis cs:1,-4) — (axis cs:2,3);
\draw (axis cs:-4,4) — (axis cs:-2,-4);
\addplot [domain=-5:-4, samples=200, restrict y to domain=-10:10,smooth,dashed] {-4*x-12};
\draw (axis cs:2,3) [blue,fill=blue,very thick] circle (2.0pt);
\end{axis}
\end{tikzpicture}
\end{document}
`
Grazie mille,
Lorenzo