How can I write a contour integration (from complex analysis) in Mathematics Stack Exchange?

I have many questions relating to contour integration in complex analysis, but I don't know how to write a contour integration. There is no 'contour' option on my keyboard.

If anybody helps me, I would be very thankful.


marked as duplicate by Simply Beautiful Art, José Carlos Santos, Shailesh, Watson, yoknapatawpha Aug 26 '17 at 19:22

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migrated from math.stackexchange.com Aug 18 '17 at 20:06

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    $\begingroup$ $$\int_\gamma f(z)dz, \qquad \int_{|z| = 1} f(z)dz, \qquad \int_{0 \to 1 \to 1+i \to i \to 0} f(z)dz$$ $\endgroup$ – reuns Aug 18 '17 at 15:37
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    $\begingroup$ \oint (in math mode) gives $\oint$. $\endgroup$ – Andrés E. Caicedo Aug 18 '17 at 21:25
  • $\begingroup$ Related: How to show the integral symbol on this site? $\endgroup$ – Martin Sleziak Aug 18 '17 at 21:30
  • $\begingroup$ This is a question for tex stackexchange imo. You can also use detexify $\endgroup$ – Fakemistake Aug 18 '17 at 21:38
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    $\begingroup$ @Fakemistake I think that questions about MathJax (as opposed to LaTeX) are fine here - in fact you can see many past questions in (mathjax) tag. There was a discussion where or not they are on-topic on TeX.SE: How do we feel about MathJaX/jsMath/other spin-offs? $\endgroup$ – Martin Sleziak Aug 18 '17 at 21:45

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