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If you are interested in just inserting simple mathematics or simple inline LaTeX, you do not need to use a full fledged LaTeX mode described in the rest of this document. You can write both math symbols, simple formulae, and even simple LaTeX using the equation button ${x^2}y$ in the toolbar. Read more \href{https://support.authorea.com/en-us/article/how-to-write-inline-latex-and-math-symbols-viw9tj/?1568313570439}{here}.  \textbf{... but if you want to venture into the LaTeX world... world}  Authorea supports \LaTeX, a powerful typesetting program that renders beautiful math notation.