文字入力のテスト

<script type="text/tikz">
\begin{tikzpicture}
\draw[-stealth]( 0,-3.5) -- (0,3.5);
\draw[-stealth](-3.5,0) -- (3.5,0);
\draw(-0.3,-0.1) node[below]{0};
\foreach \x in {-3,-2,-1,1,2,3}
   \draw (\x,-0.1)node[below]{\x} -- (\x, 0.1);
\foreach \y in {-3,-2,-1,1,2,3}
   \draw (-0.1,\y)node[left]{\y} -- (0.1,\y);
\end{tikzpicture}
</script>