函数 C 看起来像多行，我希望它有一行。我怎样才能让它看起来像一行？这是我的代码：
\begin{tikzpicture}
\draw[step=0.5cm,cyan,very thin] (-1,-1) grid (5,6);
\draw[black, ->] (-1,0) -- (5,0);
\draw[black, ->] (0,-1) -- (0,6);
\draw[thick, black, ->] (0,0) -- (0.5,0);
\draw[thick, black, ->] (0,0) -- (0,0.5);
\draw [scale=0.5, domain=(1/3.65):10,samples=25, teal] plot (\x,{(9+(\x)^2+3*\x)/(3*\x)}) ;
\draw [scale=0.5, domain=-2:10, smooth, variable=\x, blue] plot ({\x}, {-2/3*\x+5});
\filldraw[blue] (3,0.5) node[anchor=south] {$d$};
\filldraw[teal] (4,2) node[anchor=south] {$\mathcal{C}$};
\filldraw[black] (3,1.75) node[anchor=south west] {A};
\filldraw[black] (3,1.75) node[] {$\times$};
\filldraw[black] (0,0.25) node[anchor=east] {$\overrightarrow{i}$};
\filldraw[black] (0.25,0) node[ anchor=north] {$\overrightarrow{j}$};
\filldraw[black] (5,0) node[ anchor=south east] {$x$};
\filldraw[black] (0,6) node[ anchor=north west] {$y$};
\foreach \x in {-1,2,3,4,5,6,7,8,9}
\draw ({\x cm/2},2pt) -- ({\x cm/2},-2pt) node[anchor=north] {$\x$};
\foreach \y in {2,3,4,5,6,7,8,9,10,11}
\draw (2pt, {\y cm/2}) -- (-2pt, {\y cm/2}) node[anchor=east]{$\y$};
\end{tikzpicture}
我正在尝试画这个：
但我明白这一点：
答案1
我发现样本数量是25个而不是200个。
解决方案 ：
\draw [scale=0.5, domain=(1/3.65):10,samples=200, teal] plot (\x,{(9+(\x)^2+3*\x)/(3*\x)}) ;