Math & Science ⇒ Cross-Referencing an equation

[amegahed3]

Hi All,

I'm a beginner in latex, and I have the following question:

How can I cross-reference a certain equation?

Also, if I have one number for a set of equations, how can I cross-reference them?

Thanks.

Aly

[Stefan Kottwitz]

Hi Aly,

use \label and \ref. With amsmath, recommendable for all math texts, you could use \eqref. Here's an example:

Code: Select all

\documentclass[a4paper,10pt]{article}
\usepackage{amsmath}
\begin{document}
\begin{equation}
  ax + by +c = 0 \label{eq1}
\end{equation}
See \eqref{eq1}.
\end{document}

Stefan

[amegahed3]

Great. It worked perfectly. Thanks.

Aly