![如何更改 polynom 包中的字体大小?](https://linux22.com/image/456666/%E5%A6%82%E4%BD%95%E6%9B%B4%E6%94%B9%20polynom%20%E5%8C%85%E4%B8%AD%E7%9A%84%E5%AD%97%E4%BD%93%E5%A4%A7%E5%B0%8F%EF%BC%9F.png)
使用 polynom 包执行多项式长除法时如何更改字体大小?例如,如何让它显示在 /scriptstyle 中?
下面是我目前拥有的图像,我将在图像下方附上代码。我怎样才能干净地重写它,但使用脚本字体?
非常感谢你的协助。
\documentclass{standalone}
\usepackage{polynom}
\makeatletter
\def\pld@ArrangeResult#1{%
\ifx\pld@remainder\@empty
\@tempcnta\pld@maxcol\relax
\pld@InsertItems@do\pld@lastline
{\pld@firsttrue\pld@PLD{\pld@R{0}{1}}}%
\fi
\ifnum\pld@currstage>\z@
\pld@Extend\pld@allines{\pld@lastline\cr}%
\else
\pld@InsertFake\pld@lastline
\fi
\pld@iftopresult
\def\pld@lastline{\pld@PrintPoly\pld@divisor\,\smash{\Big)}\kern-5.7pt&}%
\else
\let\pld@lastline\@empty
\ifx B\pld@style\else
\def\pld@lastline{\pld@leftdelim\strut\pld@rightxdelim&}%
\fi
\fi
\expandafter\pld@AR@col\expandafter\pld@PLD
\expandafter\pld@lastline#1+\relax+%
\pld@SplitQuotient
\pld@iftopresult
\let\pld@currentline\@empty
\expandafter\pld@AR@col\expandafter\pld@PLD
\expandafter\pld@currentline
\pld@quotient+\relax+%
\expandafter\pld@AR@col\expandafter\pld@XPLD
\expandafter\pld@currentline
\pld@shadow+\relax+%
\edef\pld@subline{%
\noexpand\cline{\tw@-\pld@maxcol}%
\noalign{\vskip\jot}}%
\pld@Extend\pld@currentline{\expandafter\cr\pld@subline}%
\else
\@tempcnta-\@tempcnta
\advance\@tempcnta\pld@maxcol\relax \advance\@tempcnta\@ne
\edef\pld@span{\the\@tempcnta}%
\ifx B\pld@style
\pld@AddTo\pld@lastline{%
&\multispan\pld@span${}=%
\pld@PrintPolyWithDelims\pld@divisor
\expandafter\pld@IfSum\expandafter{\pld@divisor}{}{\cdot}%
\expandafter\pld@IfSum\expandafter{\pld@quotient}\pld@true
\pld@false
\pld@if \pld@leftdelim
\pld@PrintPolyShadow
\pld@rightdelim
\else \pld@PrintPolyShadow \fi
\pld@firstfalse
\expandafter\pld@PrintRemain\expandafter{\pld@remainder}$}%
\else
\pld@AddTo\pld@lastline{%
&\multispan\pld@span$\pld@leftxdelim\strut\pld@rightdelim
\pld@div
\pld@PrintPolyWithDelims\pld@divisor=
\pld@PrintPolyShadow
\ifx\pld@remainder\@empty\else
+{}%
\setbox\z@=\hbox{$\displaystyle
\frac{\let\strut\@empty\pld@firsttrue \expandafter
\pld@PrintRemain\expandafter{\pld@remainder}}%
{\let\strut\@empty\pld@PrintPoly\pld@divisor}$}%
\dp\z@=\z@\box\z@
\fi
$}%
\fi
\fi
\expandafter\pld@AR@\pld@allines\relax}
\makeatother
\begin{document}
\[\polylongdiv{x^3+4x^2+x-1}{x^3+x^2}\]
\end{document}
答案1
您可以polynom
在构建阶段为 定义一个新键并注入代码。请注意,加载amsmath
是必不可少的(如果您使用标准字体;如果您加载lmodern
,请确保也加载fixcmex
)。
\documentclass{article}
\usepackage{amsmath}
\usepackage{polynom}
\usepackage{xpatch}
\makeatletter
\xpatchcmd{\pld@PrintLongDiv}
{\begingroup}
{\begingroup\pld@FONTSIZE}
{}{}
\define@key{pld}{fontsize}{\def\pld@FONTSIZE{#1}}
\def\pld@FONTSIZE{}
\makeatother
\begin{document}
\[
\polylongdiv{x^3+4x^2+x-1}{x^3+x^2}
\]
\[
\polylongdiv[fontsize=\scriptsize]{x^3+4x^2+x-1}{x^3+x^2}
\]
\polylongdiv[fontsize=\LARGE]{x^3+4x^2+x-1}{x^3+x^2}
\end{document}
但是,根据您提出的括号修复方法,对齐并不总是精确的,还需要进行一些工作。
答案2
这是成品,再次感谢!
\documentclass{standalone}
\usepackage{amsmath}
\usepackage{xpatch}
\usepackage{polynom}
\makeatletter
\xpatchcmd{\pld@PrintLongDiv}%%%%--> credit: egreg
{\begingroup}
{\begingroup\pld@FONTSIZE}
{}{}
\define@key{pld}{fontsize}{\def\pld@FONTSIZE{#1}}
\def\pld@FONTSIZE{}%%%%
\def\pld@ArrangeResult#1{%
\ifx\pld@remainder\@empty
\@tempcnta\pld@maxcol\relax
\pld@InsertItems@do\pld@lastline
{\pld@firsttrue\pld@PLD{\pld@R{0}{1}}}%
\fi
\ifnum\pld@currstage>\z@
\pld@Extend\pld@allines{\pld@lastline\cr}%
\else
\pld@InsertFake\pld@lastline
\fi
\pld@iftopresult
\def\pld@lastline{\pld@PrintPoly\pld@divisor\,\smash{\raisebox{3pt}{\big)}}\kern-3.4pt&}%
\else
\let\pld@lastline\@empty
\ifx B\pld@style\else
\def\pld@lastline{\pld@leftdelim\strut\pld@rightxdelim&}%
\fi
\fi
\expandafter\pld@AR@col\expandafter\pld@PLD
\expandafter\pld@lastline#1+\relax+%
\pld@SplitQuotient
\pld@iftopresult
\let\pld@currentline\@empty
\expandafter\pld@AR@col\expandafter\pld@PLD
\expandafter\pld@currentline
\pld@quotient+\relax+%
\expandafter\pld@AR@col\expandafter\pld@XPLD
\expandafter\pld@currentline
\pld@shadow+\relax+%
\edef\pld@subline{%
\noexpand\cline{\tw@-\pld@maxcol}%
\noalign{\vskip\jot}}%
\pld@Extend\pld@currentline{\expandafter\cr\pld@subline}%
\else
\@tempcnta-\@tempcnta
\advance\@tempcnta\pld@maxcol\relax \advance\@tempcnta\@ne
\edef\pld@span{\the\@tempcnta}%
\ifx B\pld@style
\pld@AddTo\pld@lastline{%
&\multispan\pld@span${}=%
\pld@PrintPolyWithDelims\pld@divisor
\expandafter\pld@IfSum\expandafter{\pld@divisor}{}{\cdot}%
\expandafter\pld@IfSum\expandafter{\pld@quotient}\pld@true
\pld@false
\pld@if \pld@leftdelim
\pld@PrintPolyShadow
\pld@rightdelim
\else \pld@PrintPolyShadow \fi
\pld@firstfalse
\expandafter\pld@PrintRemain\expandafter{\pld@remainder}$}%
\else
\pld@AddTo\pld@lastline{%
&\multispan\pld@span$\pld@leftxdelim\strut\pld@rightdelim
\pld@div
\pld@PrintPolyWithDelims\pld@divisor=
\pld@PrintPolyShadow
\ifx\pld@remainder\@empty\else
+{}%
\setbox\z@=\hbox{$\displaystyle
\frac{\let\strut\@empty\pld@firsttrue \expandafter
\pld@PrintRemain\expandafter{\pld@remainder}}%
{\let\strut\@empty\pld@PrintPoly\pld@divisor}$}%
\dp\z@=\z@\box\z@
\fi
$}%
\fi
\fi
\expandafter\pld@AR@\pld@allines\relax}
\makeatother
\begin{document}
\polylongdiv[fontsize=\scriptsize]{x^3+4x^2+x-1}{x^3+x^2}
\end{document}