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*Updated 2019-07-15*

# Motivation

Just to remember the (good?) days when I was TA at college.

# Supply-demand classic figure

For example, consider this classic supply-demand chart (right-click on the image to download the editable svg):

If you’d like to include it in a LaTeX document or presentation you can write the tex formulas in the figure, like this:

You can save the figure as svg and pdf with this options enabled (don’t forget to keep an svg copy):

Finally you can create a pdf like this:

```
\documentclass{article}
\usepackage{graphicx}
\usepackage{xcolor}
\usepackage{transparent}
\usepackage{import}
\begin{document}
\begin{figure}[h]
\centering
\input{example2.pdf_tex}
\caption{Supply and demand.}
\end{figure}
\end{document}
```

Check the result here.

To

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