如何用LaTeX/Tikz畫數軸

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1

效果圖

2

代碼

下面代碼直接運行就可以了

% !TeX TS-program = xelatex

\documentclass{standalone}

\usepackage{tikz}

\usepackage{xcolor}

\begin{document}

\begin{tikzpicture}

\draw[->] (-5.5,0)--(5.5,0);

\foreach \x in {-5,-4,...,5}

\draw (\x,0.2)--(\x,0)node[below]{$\x$};

\draw(-3,0)--(-3,1)--(5,1);

\draw(2,0)--(2,1.5)--(-5,1.5);

\draw[fill=blue!10] (2,0)--(2,1)--(-3,1)--(-3,0);

\draw[fill=white] (2,0) circle (0.05);

\node at (0,3){};

\end{tikzpicture}

\end{document}