withMathJax: Load the MathJax library and typeset math expressions
In sheikhbarabas/shiny: Web Application Framework for R

This function adds MathJax to the page and typeset the math expressions (if found) in the content .... It only needs to be called once in an app unless the content is rendered after the page is loaded, e.g. via renderUI, in which case we have to call it explicitly every time we write math expressions to the output.

1	withMathJax(...)

...

any HTML elements to apply MathJax to

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withMathJax(helpText("Some math here $$\\alpha+\\beta$$"))
# now we can just write "static" content without withMathJax()
div("more math here $$\\sqrt{2}$$")