There is a new feature (or an update of a once-available feature, I cant quite tell) in Google Docs that allows you to type equations using LaTeX shortcuts. The only caveat is that is that you can't see the LaTeX code and edit itdirectly -- maybe in the next version?
Here is the description of LaTeX equations in Google Docs:
- ► 2014 (19)
- ► 2013 (23)
- ► 2012 (20)
- ► 2011 (41)