Figure from Mathematica is printed on separate page

Question

I am trying to include a Mathematica code in LaTeX. To do that, I just exported the code as PDF. The thing is that when I am trying to include the PDF figure in my TeX code, the figure is printed on the next page.

The code I am using is

\documentclass[a4paper,11pt]{article}
\usepackage{kerkis}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsfonts}
\usepackage{amsthm}
\usepackage[pdftex]{graphicx}

\begin{document}
\begin{align}
\nonumber W_{r\rightarrow\infty}=&-\int_{r}^{\infty}\!F\,\mathrm{d}y=-\int_r^\infty \!     \dfrac{1}{4\pi \epsilon_0} \dfrac{q^2}{\alpha^2} \dfrac{\alpha^3}{y^3}\left(1-    \dfrac{\alpha^2}{y^2}\right)^{-2}\,\mathrm{d}y\\
=&-\dfrac{1}{4\pi \epsilon_0} \dfrac{q^2}{\alpha^2}\alpha^3 \underbrace{\int_r^\infty     \! y^{-3} \left(1-\dfrac{\alpha^2}{y^2}\right)^{-2} \,\mathrm{d}y}_{I} \label{eq:WcondI}
\end{align}

\begin{figure}[H]%
\includegraphics[width=\columnwidth]{math}%
\end{figure}
\end{document}

The image can be downloaded from here https://dl.dropbox.com/u/19828093/math.pdf

Any ideas on that?

Answer 1

The [H] option is only defined by the float package. In your case, the unknown option is changed into [p].

However you don't need at all a figure environment, since you don't have a caption. The \includegraphics command can go everywhere, even in math.

With the following code you will be sure that the Mathematica code will never be detached from the equation (unless you allow it with \displaybreak):

\documentclass[a4paper,11pt]{article}

\usepackage[tbtags]{amsmath}
\usepackage{graphicx}

\newcommand{\diff}{\mathop{}\!\mathrm{d}}

\begin{document}
\begin{gather}
\begin{split}
W_{r\rightarrow\infty}
&=
  -\int_{r}^{\infty} F \diff y=
  -\int_r^\infty \dfrac{1}{4\pi \epsilon_0} \dfrac{q^2}{\alpha^2} \dfrac{\alpha^3}{y^3}
    \left(1-\dfrac{\alpha^2}{y^2}\right)^{-2}\diff y\\
&=
  -\dfrac{1}{4\pi \epsilon_0} \dfrac{q^2}{\alpha^2}\alpha^3
    \underbrace{\int_r^\infty y^{-3} \left(1-\dfrac{\alpha^2}{y^2}\right)^{-2} \diff y}_{I}
\end{split}
\label{eq:WcondI}
\\[2ex]
\includegraphics[width=\columnwidth]{math}\notag
\end{gather}
\end{document}

Notice how I corrected your input of the equation, that shows some flaws.

Answer 2

[H] is not defined by default. I'd simply recommend writing [htp] instead, works just as well, but the float will move if there is no room for it, and the rest of the page will be used for text.