The mathmml command will take an expression and return the result in MathML. For example, if you enter
you will get
<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN" "http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd" [ <!ENTITY mathml "http://www.w3.org/1998/Math/MathML"> ]> <html xmlns="http://www.w3.org/1999/xhtml"> <body> <math mode="display" xmlns="http://www.w3.org/1998/Math/MathML"> <mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac> </math><br/> </body> </html>
which is the number 1/2 in MathML form, along with enough information to make it a complete HTML document.