Kodama's home / tips.
真直な矢印は LaTeX 標準の $\nearrow$ と $\searrow$ を使う.
曲り矢印の定義:
%% 曲り矢印 10pt x 10pt 相当 \def\lbarrow{{\begin{picture}(10,10) \put(10,10){\oval(20,20)[lb]}\put(10,0){\vector(1,0){2}} \end{picture}}} \def\ltarrow{{\begin{picture}(10,10) \put(10,0){\oval(20,20)[lt]}\put(10,10){\vector(1,0){2}} \end{picture}}} \def\rbarrow{{\begin{picture}(10,10) \put(0,10){\oval(20,20)[rb]}\put(10,10){\vector(0,1){2}} \end{picture}}} \def\rtarrow{{\begin{picture}(10,10) \put(0,0){\oval(20,20)[rt]}\put(10,0){\vector(0,-1){2}} \end{picture}}}
使用例:
\documentclass{article} \usepackage{bendarrow} \begin{document} 増減表\\ \begin{tabular}{c||c|c|c|c|c|c|c} $x$ & & 1& & 2 & & 3 & \\ \hline $y'$ & $+$ & 0 & $-$ & $-$ & $-$ & 0 & $+$ \\ $y^{\prime\prime}$ & $-$ & $-$ & $-$ & 0 & $+$ & $+$ & $+$ \\ \hline $y$ & \ltarrow & $\mbox{極大}\atop 3$ & \rtarrow & $\mbox{変曲点}\atop 2 $ & \lbarrow & $\mbox{極小}\atop 1$ & \rbarrow \end{tabular} \\ \ltarrow \rtarrow \\ \lbarrow \rbarrow \\ \end{document}
Kodama's home / tips.