[Tex/LaTex] How to have a bigger integral (\int) delimiter

delimitersequationsmath-modesymbols

I'm writing some integrals and I don't like the way the \int symbol is displayed when it is followed by a big delimiter.
Here's the code:

\[
\int_S\biggl(\nabla\times\bar B - \mu_0\bar J -
\mu_0\varepsilon_0\frac{\partial\bar E}{\partial t}\biggr) \cdot\hat n\,ds = 0
\]

And here's the output:

alt text

What I'd like to have is an integral sign taller than the parenthesis, as if it would have a sort of \bigg command right before. Is there any way to do this, or the \int symbol is impossible to modify?

Best Answer

Maybe the bigints package? http://www.ctan.org/tex-archive/macros/latex/contrib/bigints/

Related Solutions

[Tex/LaTex] small integral delimiter

With an up-to-date texlive-2010, if you use Asana Math font with unicode-math package (requires XeTeX or LuaTeX), you will get an integral that as high as the summation symbol:

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{Asana-Math.otf}

\begin{document}

\begin{equation}
\sum_i^j A_{ij}\int\limits_{-\infty}^{+\infty} \cos x dx 
\end{equation}

\end{document}

[Tex/LaTex] Look for a bigger delimiter than \Bigg

You could scale / using \scalebox{<factor>}{<stuff>} from the graphicx package:

enter image description here

\documentclass{article}
\usepackage{amsmath}% http://ctan.org/pkg/amsmath
\usepackage{graphicx}% http://ctan.org/pkg/graphicx
\begin{document}
\[\left.
  \begin{vmatrix}
    a_{11}&a_{12}&a_{13}\\
    a_{21}&a_{22}&a_{23}\\
    a_{31}&a_{32}&a_{33}
  \end{vmatrix}\middle/\begin{vmatrix}
    b_{11}&b_{12}&b_{13}\\
    b_{21}&b_{22}&b_{23}\\
    b_{31}&b_{32}&b_{33}\\
    b_{41}&b_{42}&b_{43}
  \end{vmatrix}
\right.\]
\[
  \begin{vmatrix}
    a_{11}&a_{12}&a_{13}\\
    a_{21}&a_{22}&a_{23}\\
    a_{31}&a_{32}&a_{33}
  \end{vmatrix}\scalebox{1.5}{\Bigg/}\begin{vmatrix}
    b_{11}&b_{12}&b_{13}\\
    b_{21}&b_{22}&b_{23}\\
    b_{31}&b_{32}&b_{33}\\
    b_{41}&b_{42}&b_{43}
  \end{vmatrix}
\]
\end{document}

Note that this scales / both vertically and horizontally, increasing the width of the symbol as well. To minimize this, I've only scaled \Bigg/. To see the difference, consider (say) \raisebox{-2ex}{\scalebox{4.5}{/}}.

Another alternative could be to rotate a vertical rule by (say) 15 degrees clockwise. For this you could use

\rotatebox{-15}{\rule[-1.8\baselineskip]{0.4pt}{4\baselineskip}}

The above vertical rule has a fixed width of 0.4pt, which you can change to your liking.

Best Answer

Related Solutions

[Tex/LaTex] small integral delimiter

[Tex/LaTex] Look for a bigger delimiter than \Bigg

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