> IMPORTANT: I am following this mail with a patch to org.el which will
> add support for LaTeX-to-MathML conversion using an external
> converter.

MathToWeb is available from
http://www.mathtoweb.com/cgi-bin/mathtoweb_home.pl

Your .emacs should look something like this.

(custom-set-variables
 '(org-latex-to-mathml-convert-command "java -jar %j -unicode -force -df %o %I")
 '(org-latex-to-mathml-jar-file "~/tmp-odt/mathtoweb.jar"))

I am attaching odt files used with both dvipng and mathml options. The
latex-mathml.odt reports an error on one of the $$ $$ equations.

Note to reviewers: Can someone enhance the patch so that
`org-latex-src-embed-type can take all the various anchors that a latex
equation could use - inline, display-unnumbered, display-numbered, what
else?

Note to the users:
1. You need to not only apply this patch but also pull from the repo for
   full support.
2. Currently there is NO support for numbered and displayed equations
   which go like this

   x = y             (1)
   y = z             (2)