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I am using Notion for my studies: so I have to use Latex to represent the equations or others math stuffs. I noticed that I can use the Newtonian notation on Latex with the command \dot or \ddot (first derivative and second derivative) but I cannot represent the third with \dddot or with something else. Is there a way to represent that?

MattAllegro
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Emiliano Cacciuto
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  • Not really in topic for Stack Overflow since this isn't about programming. https://tex.stackexchange.com/q/42443/16923 and https://tex.stackexchange.com/q/131587/16923 discuss how `\dddot` can be re-defined so one of the packages listed there must have the original definition. Whether any of that will also work with KaTeX as indicated by your tag is a different question. You might need to contribute an implementation to KaTeX if not. – MvG Oct 10 '22 at 06:28
  • See [this answer to your question](https://stackoverflow.com/a/70144333/3543233)! – MattAllegro Oct 26 '22 at 07:21

1 Answers1

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As in this other answer, three dots (\dddot) and four dots (\ddddot) in math mode require the package amsmath.

So you have either

\documentclass{article}

\begin{document}

\[\dot{x}\]

\[\ddot{x}\]
    
\end{document}

or

\documentclass{article}
\usepackage{amsmath}

\begin{document}

\[\dot{x}\]

\[\ddot{x}\]

\[\dddot{x}\]

\[\ddddot{x}\]

\end{document}
MattAllegro
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