Math & Science ⇒ Suspend align enviroment

[jaybz]

Is it possible to suspend the align environment like with enumerate? I can't seam to find any examples.

[localghost]

A better description of what you are after could be helpful. It is quite unclear with what want to interrupt the environment. If I understand you right, the \intertext command of amsmath is probably what you are looking for. It is enhanced by \shortintertext of the mathtools package. Some more stuff about math typesetting can be found in the »Math mode« document.


Thorsten

[jaybz]

How can I reproduce this effect without all the hspaces ?

Code: Select all

\documentclass[a4paper,12pt]{article}
\usepackage[top=1in, bottom=0.3in, left=25mm, right=25mm]{geometry}
\usepackage{mathtools}
\begin{document}
\begin{align*}
2x &= 4x^{2} + 7x \hspace{29mm} \makebox[10mm][c]{and \hspace{11mm} $g(x) = 42$} \\
2x &= 4x^{2} + 7x \hspace{36mm} g'(x) = 12 \\
2x &= tan(x)x^{2} + 7x \hspace{26mm} g''(x) = 7x +1 \\
\end{align*}
\end{document}

[localghost]

The amsmath package also provides the alignat* environment for such cases.

Code: Select all

\documentclass[12pt,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage{geometry}
\usepackage{mathtools}

\begin{document}
  \begin{alignat*}{2}
    2x &= 4x^{2}+7x       &\makebox[10em]{and} g(x) &= 42 \\
    2x &= 4x^{2}+7x       & g'(x) &= 12 \\
    2x &= \tan(x)x^{2}+7x & g''(x) &= 7x +1
  \end{alignat*}
\end{document}

The tangent function is written upright in math expressions and therefore has with \tan a predefined operator command (see code above).

[jaybz]

Yes that works nicely, I knew about the tan(x) I was just in a hurry.
Thank you.