如何在乳胶中制作图表？

Question

有人能帮我在乳胶中制作以下图表。我是乳胶图形的初学者或几乎不熟悉。

Answer 1

如果你编译这个：

\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{center}
  \begin{tikzpicture}[scale=.1]
    \coordinate (i) at (800/9,2600/27);
    \coordinate (j) at (800/9,0);
    \draw (-5,0)--(100,0);
    \draw (0,-5)--(0,125);
    \draw[thick,domain=0:100] plot (\x,{(7*\x/4-3*(\x/10)*(\x/10)/4});
    \draw[thick,domain=0:100] plot (\x,{(3*\x/4+3*(\x/10)*(\x/10)/8});
    \draw[dashed] (j)--(i);
    \node[above left] at (60,78) {$7000x-30x^2$};
    \node[above left] at (100,112) {$3000x+15x^2$};
    \node at (50,60) {$A$};
    \node at (i) {$\bullet$};
    \node at (0,0) {$\bullet$};
    \node[below left] at (0,0) {$0$};
    \node[below] at (j) {$\frac{800}9$};
  \end{tikzpicture}
\end{center}
\end{document}

你会得到这个：