Text Formatting ⇒ when the equations is too long...beyond the page width

[Sam]

Dear All,

I have the following equation which is too long...beyond the page width

how could i divide it into two parts...in a correct way...

thanks for your help

\begin{equation}
%\label{eq:basel-problem}
\theta \emph(t) = \arccos [\frac{A_{1}^2 - (A_0 + (X_{0}\cdot \sin (\omega \cdot t)))^2}{-2\cdot L\cdot (\sqrt{(A_0 + (X_{0}\cdot \sin (\omega \cdot t)))^2 + L^2})}] - \atan((A_0 + (X_{0}\cdot \sin (\omega \cdot t)))/L)
\end{equation}

[Montag]

You could use the split-environment provided by amsmath.

[Sam]

You could use the split-environment provided by amsmath.

thanks for the answer...

could you please give more details... am novice to these terms...

is it part of maths library in latex?

[Montag]

Come on, you could have at least searched for it (on google/bing/yahoo) ...?
Please take a look at sections 1 and 2 in
http://www.latex-community.org/forum/vi ... =37&t=5838

After that, visit http://ctan.org/pkg/amsmath.

I have a question myself: What is the maths library?

[svend_tveskaeg]

Here is a document with an example of what Montag is talking about. I have also used the \hphantom command from the mathtools package in order to get the correct alignment.

Code: Select all

\documentclass[12pt]{article}

\usepackage{mathtools}

\begin{document}

Something:
\begin{gather}
\begin{split}
 \label{something}
  \theta(t)
    &= \arccos\left(\frac{A_1^2 - (A_0 + (X_0 \cdot \sin(\omega \cdot t)))^2}{-2 \cdot L \cdot \sqrt{(A_0 + (X_0 \cdot  \sin(\omega \cdot t)))^2 + L^2}}\right)\\
    &\hphantom{{}=} - \arctan((A_0 + (X_{0} \cdot \sin(\omega \cdot t)))/L)
\end{split}
\end{gather}
In \eqref{something} we have something.

\end{document}

[localghost]

[…] I have also used the \hphantom command from the mathtools package in order to get the correct alignment.

This command comes from the LaTeX kernel.

[…] I have the following equation which is too long...beyond the page width

how could i divide it into two parts...in a correct way […]

Please check your example for completeness and functionality and always provide a full but minimal example. The \atan command doesn't exist as such.

Use the aligned environment from amsmath within equation. The TeX primitive \mathrel provides better alignment of the second line.

Code: Select all

\documentclass[11pt,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{mathtools}   % load »amsmath«

\begin{document}
  \begin{equation}\label{eq:basel-problem}
    \begin{aligned}
      \theta(t) &= \arccos\left[\frac{A_{1}^2-(A_0+(X_{0}\cdot\sin(\omega\cdot t)))^2}{-2\cdot L\cdot \sqrt{(A_0 + (X_{0}\cdot \sin (\omega \cdot t)))^2 + L^2}}\right] \\
      &\mathrel{\phantom{=}} -\arctan[A_0+(X_{0}\cdot\sin(\omega\cdot t)))/L]
    \end{aligned}
\end{equation}
\end{document}

See the »Math mode« document for further reading on mathematical typesetting.


Thorsten

[svend_tveskaeg]

This command comes from the LaTeX kernel.

Arrrh! Thanks!