随笔分类 -  Latex

摘要：\begin{tikzpicture}[scale=0.7]\draw[->,very thick] (-5,0) --(5,0) node[right]{$x$};\draw[->,very thick] (0,-3) --(0,5);\draw[very thick ] (-3,3) parabola bend (0,-1) (3,3);\draw node [below left] at (0,-1) {\textcircled{$1$}};\foreach \x/\xtext in {-3/$m$,3/$n$}\draw[shift={(\x,0)},very thick] 阅读全文