答案 0 :(得分:2)
您可以使用以下代码:
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric}
\begin{document}
\centering
\begin{tikzpicture}
\node (0,0) {$M = \frac{A+B}{C \times D} + F + G$};
\draw[thick, red, ->] (-0.5,0.5) -- (-.35,2);
\draw[thick, red, ->] (0,0.5) -- (-.15,2);
\draw[thick, ->] (0.7,-0.25) -- (1,-2);
\draw[thick, ->] (1.3,-0.25) -- (1.1,-2);
\node[draw=red, ellipse] at (-.2,2.5) {method 1};
\node[ellipse,draw] at (1.1,-2.5) {method 2};
\end{tikzpicture}
\end{document}
给出了
希望这有帮助!