考试类别：解决方案内的轮廓标记对齐右对齐

Question

我希望解决方案中的分数（例如 [1/2]）能够与问题的总分数一样，在右侧齐平。

\documentclass[11pt,answers]{exam}
\RequirePackage{amssymb, amsfonts, amsmath, latexsym, verbatim, xspace, setspace, amsthm}
\RequirePackage{tikz, pgflibraryplotmarks, esint}

\begin{document} 

\begin{questions}
\pointsdroppedatright
\bracketedpoints

\question[1]
Differentiate 
\begin{equation*}
f(x)=x^3-2x
\end{equation*}
and evaluate at $x=0$ \droppoints

\begin{solution}
\begin{gather*}
f^{\prime}(x)=3x^2-2 \text{ [$\frac{1}{2}$]} \\
f^{\prime}(0)=-2 \text{ [$\frac{1}{2}$]}
\end{gather*}
\end{solution}

\end{questions}

\end{document}

谢谢！

Answer 1

这里我介绍一下\answermarks[]{}。第一个可选参数 default1是标记，第二个参数是要设置的方程。

注意：我擅自在 的右侧做了标记\textstyle。要将其恢复为\displaystyle，只需将的定义$#1$改为即可。$\displaystyle#1$\answermarks

为了获得框内的标记，请将的定义中的更改+2.4cm为。-1cm\fulltextwidth

\documentclass[11pt,answers]{exam}
\RequirePackage{amssymb, amsfonts, amsmath, latexsym, verbatim, xspace, setspace, amsthm}
\RequirePackage{tikz, pgflibraryplotmarks, esint}
\usepackage{stackengine}
\newlength\fulltextwidth
\fulltextwidth=\dimexpr\textwidth+2.4cm\relax
\newcommand\answermarks[2][1]{\def\stacktype{L}\def\useanchorwidth{T}\ensurestackMath{%
  \stackon[0pt]{\displaystyle\vphantom{#1}#2}{\hspace{\fulltextwidth}\llap{\text{ [$#1$]}}}%
}}
\begin{document} 
\begin{questions}
\pointsdroppedatright
\bracketedpoints
\question[1]
Differentiate 
\begin{equation*}
f(x)=x^3-2x
\end{equation*}
and evaluate at $x=0$ \droppoints
\begin{solution}
\begin{gather*}
  \answermarks[\frac{1}{2}]{f^{\prime}(x)=3x^2-2} \\
  \answermarks[\frac{1}{2}]{f^{\prime}(0)=-2}
\end{gather*}
\end{solution}
\end{questions}
\end{document}