% Plotting a function
% Author: Stefan Kottwitz
% https://www.packtpub.com/hardware-and-creative/latex-cookbook
\documentclass[border=10pt]{standalone}
%%%<
\usepackage{verbatim}
%%%>
\begin{comment}
:Title: Plotting a function
:Tags: Mathematics;Functions;Plots;Graphics;PGFPlots;Chapter10
:Author: Stefan Kottwitz
:Slug: function-plot

Functions play an important role in mathematics. To visualize
them to better understand their properties, for seeing roots
and extreme points, we can plot them in a coordinate system.

Here, we will see how to easily plot functions.
We will print the polynomial function f(x) = x^3 - 5*x.

We use the pgfplots package, which bases on pgf/TikZ. 

The code, and more, is explained in the LaTeX Cookbook,
Chapter 10, Advanced Mathematics, Plotting functions 
in two dimensions.
\end{comment}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
  \begin{axis} [axis lines=center]
    \addplot [domain=-3:3, smooth, thick] { x^3 - 5*x };
  \end{axis}
\end{tikzpicture}
\end{document}

