# Questions tagged [mathjax]

For questions about MathJax, which is used to write mathematics on Stack Exchange sites.

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### How to put 2x2 matrices in the denominator and numerator using MathJax?

Answer(s) to Reciprocal vectors of a two dimensional lattice without borrowing from the third dimension suggest a way forward in figuring out how to divide 2x2 matrices in a straightforward way. In ...
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### How to write roots other than square roots in MathJax?

I can't find how to write roots other than square root using MathJax. There doesn't seem to be anything about it on the legendary MathJax basic tutorial and quick reference These are my best attempts, ...
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### Could we have predefined macros for naturals, integers, reals, and the like? [duplicate]

Request in title. Could we have site-wide predefined $\LaTeX$ macros \N, \Z, \Q and ...
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### Latex not rendering regardless of browser

As the title says the math formatting doesn't show regardless of the browser or device I'm using. However changing the network with Vpn or mobile network solves the problem for some browsers so I the ...
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### How to write h-bar (Planck constant divided by 2 $\pi$) using MathJax?

In this question I wrote $$|\mathbf{k_{scat}}| = \frac{2 \pi}{h} \sqrt{2 m_e e V}$$ where $h$ is the Planck constant. In physics we have h-bar which is $h/ 2 \pi$ but I don't know how to add h-...
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### How do I re-enable MathJax after turning it off?

I accidentally turned off MathJax on a comment so I could see the LaTex source, and I don't know how to turn it back on again. I turned it off by right clicking in my browser, but now when I right ...
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### How to best format the question mark that immediately follows an equation in a question sentence?

Searching for "punctuation after equation" didn't turn up anything here so I'll post this as a new question. This question (on a different site) in its entirety: I was wondering where does the ...