Add LaTeX/MathJax hack

Signed-off-by: AKP <redacted>

diff --git a/content/mathjax/head.html b/content/mathjax/head.html
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+++ b/content/mathjax/head.html
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+<script>
+    MathJax = {
+        tex: {
+            inlineMath: [['$', '$']],
+        },
+    };
+</script>
+<script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml-full.js">
+</script>
\ No newline at end of file

diff --git a/content/mathjax/index.md b/content/mathjax/index.md
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+++ b/content/mathjax/index.md
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++++
+title = "Render LaTeX with MathJax"
+author = "@codemicro"
+date = 2023-02-27T00:00:00Z
+updated = 2023-02-27T00:00:00Z
+tested = "v23.02"
++++
+
+This hack will allow LaTeX equations and markup to be rendered within a page on
+Bookstack.
+
+Inline math can be surrounded with `$` and math blocks can be surrounded with 
+`$$`.
+
+This can be used with both the WYSISYG editor and the Markdown editor and will
+affect everything on a given page, meaning this can be used in titles,
+book/chapter headings, etc.
+
+#### Considerations
+
+This loads MathJax the MathJax JavaScript from a CDN, and will do so for every 
+page load.
+
+Live previews of the rendered LaTeX markup will not be rendered in the Markdown
+editor's preview.
+
+Using this markup may create difficulties when using the search engine to find
+certain pages.
+
+#### Options
+
+It is possible to configure MathJax as documented [here](https://docs.mathjax.org/en/latest/web/configuration.html).
+
+#### Code
+
+{{<hack file="head.html" type="head">}}