How do I... Embed mathematical formulae on a page?

First, make sure the Math Extension is installed.  Then create a <pre> section using the "Formatted" format from the editor toolbar.  Type in your math formula using the AMS notation (download AMS guide).  Now click on "Transformations" in the editor toolbar and select "math.formula".  The content transformation is only applied when the page is viewed.  Save your page and view the result.