I\'m currently looking at different solutions getting 2 dimensional mathematical formulas into webpages. I think that the wikipedia solution (generating png images from LaTe
As @hughes (and others) pointed out, the previous Google Chart API has been deprecated.
The example I wrote still works as of Sept 2015, but a new one shall be used now (documentation):
http://chart.googleapis.com/chart?cht=tx&chl=%5CLaTeX
Google Chart can do it (Documentation):
http://chart.apis.google.com/chart?cht=tx&chl=%5CLaTeX
I'm using this with Google Docs, because it doesn't support math yet.