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No worries all,

I have found the solution to my problem. You need to use the amsmath package, with the \tag function, which can tag new equations with previous labels.

\usepackage{amsmath}
...
\begin{equation}
y=mx+c
\label{eqn1}
\end{equation}

As previously stated
\begin{equation}
y=mx+c ...

Hello all,

I was hoping someone could help. I am using the \autoref{} function to refer back to previous equations, tables and figures with a lot of ease, however I've encountered a problem which may need a different solution.

In chapter 1 of a document i have printed an equation (using \begin ...

Hello,

I have been using the mhchem package for doing chemistry notation and have found it really useful until i get to something which is slightly awkward to write.

Using the usual math mode way of doing subscripts and superscripts i want to write

$Sn_{1-x}^{4+}Sb_{x}^{5+}O_{2}^{2-}e_{x ...

Wow,

It worked straight away. I have spent weeks trying to get this to work. Thank you so much.

I understand using the \write18 argument is a little dangerous. Why is this? What type of problems could it create? Is there a safer way (i saw somewhere there may be an option to only turn on \write18 ...

Hello everyone,

I am fairly new to LaTeX, and have been enjoying using it a lot. However, no amount of searching through forums, internet surfing, or hitting my head against the desk can help me get the epstopdf package to work. Its really annoying me.

I am using Texlive 2009 and TexWorks as my ...