我已经在Inkscape，版本：0.48并另存为LaTeX with PSTricks macros。现在我有了带代码的 LaTeX 文件PSTRICKS。我不熟悉pstricks包以及如何将 pstricks latex 代码转换为普通 LaTeX 代码。MWE 是：
\documentclass{article}
\usepackage{color}
\usepackage{pstricks,pst-node,pst-tree,auto-pst-pdf}
\usepackage{fontspec}
\setmainfont{STIXGeneral}
\begin{document}
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答案1
问题中的代码生成的 PDF 看起来与
\documentclass{article}
\usepackage{amsmath}
\pagestyle{empty}
\begin{document}
\begin{equation*}
\lim_{x\rightarrow\infty} \sqrt{b^2-4ac}
\end{equation*}
\end{document}
因此，使用图形命令编写公式看起来是一种费力的方法。