When I use $\iint_R f(x,y)dA$ the letter $R$ is to the right of the double integral sign. How to make it under the sign? This is a simple question but I couldn't find a related question.
2 Answers
Apart from JouleV's nice answer, you can use \limits option to typeset the inline with equation with limits under the integral symbol.
\documentclass{article}
\usepackage{amsmath}
\begin{document}
$\iint\limits_a f(x,y) dA$
\end{document}
to get:
answered Apr 19, 2019 at 6:53
Raaja_is_at_topanswers.xyzRaaja_is_at_topanswers.xyz
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3I'd say that
\iint\limits_Rcenters theRterm far better than\underset{R}{\iint}does.– MicoApr 19, 2019 at 8:58 -
1No upper limit should be used when
\limitsfollows a command for multiple integrals. You should also respect the OP’s preference for the differential.– egregApr 19, 2019 at 9:09 -
@egreg I have updated my answer, thanks for the remark. Could you also briefly explain why no upper limit must be used? Apr 19, 2019 at 9:13
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I don't think this is a good idea, but if you want to have it, you can use \underset:
\documentclass{standalone}
\usepackage{amsmath}
\begin{document}
$\underset{R}{\iint} f(x,y)dA$
\end{document}
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1@egreg Yes, it may not be the best, but it surely is a bad one. I will never write like that in my documents– user156344Apr 19, 2019 at 9:19
$) the entire design of the layout for inline math is to make it fit within the normal line spacing of the text in a paragraph so limits move to subscript position, if you need the display style it it best to set it as a math display(\[...\])