很抱歉提出这个初学者问题，我正在尝试画这幅图
我对此遇到了困难。
我试过
\pgfplotsset{
standard/.style={
axis line style = thick,
trig format=deg,
enlargelimits,
axis x line=middle,
axis y line=middle,
enlarge x limits=0.15,
enlarge y limits=0.15,
every axis x label/.style={at={(current axis.right of origin)},anchor=north west},
every axis y label/.style={at={(current axis.above origin) },anchor=south east},
grid=both,
ticklabel style={font=\tiny, fill=white}
}
}
\begin{tikzpicture}
\begin{axis}[standard,
xtick={-2,-1,...,4},
ytick={-1,0,...,3},
xticklabel={\pgfmathprintnumber{\tick}},
yticklabel={\pgfmathprintnumber{\tick}},
xlabel={ $x$},
ylabel={ $y$},
samples=1000,
xmin=-2, xmax=4.3,
ymin=-1, ymax=3.3,
title={title here},
title style={at={({0.5,1.1})},anchor=north}]
\node[anchor=center, label=south west:$O$] at (axis cs:0,0){};
\draw[red, thick] (axis cs: -2,0) -- (axis cs: -1,3) .. controls (axis cs: -0.5,2) and (axis cs: 0,2) .. (axis cs: 1,1);
\end{axis}
\end{tikzpicture}
和
\draw[red, thick] (axis cs: -2,0) to [out=35,in=-160] (axis cs: -1,3) coordinate (A);
没有更好
答案1
\documentclass[tikz, border=1cm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}
\pgfplotsset{
standard/.style={
axis line style=thick,
trig format=deg,
enlargelimits,
axis x line=middle,
axis y line=middle,
enlarge x limits=0.15,
enlarge y limits=0.15,
every axis x label/.style={at={(current axis.right of origin)},anchor=north west},
every axis y label/.style={at={(current axis.above origin) },anchor=south east},
grid=both,
ticklabel style={font=\tiny, fill=white}
}}
\begin{document}
\begin{tikzpicture}
\begin{axis}[standard,
xmin=-2, xmax=4.3,
ymin=-1, ymax=3.3,
xtick distance=1, ytick distance=1,
xlabel={$x$}, ylabel={$y$},
title={title here},
title style={at={({0.5,1.1})},anchor=north}
]
\node[below left] at (0,0) {$O$};
\draw[red, thick, looseness=0.3] (-2,0) to[out=60, in=180] (-1,3) to[out=0, in=180] (1,-1) to[out=0, in=-120] (2,3) -- (4,1);
\end{axis}
\end{tikzpicture}
\end{document}
