If all you want to do is write equations in LaTeX and post them into other apps, then a full TeX/LaTeX install is probably overkill.
In fact, Geeta's advice might be the best -- if your app can incorporate LaTeX code then write what you need in vi or emacs and just paste it into your main file (I have only done this with xfig but I'm sure there are other apps that can execute LaTeX commands).
― NoTimeBeforeTime (Barry Bruner), Tuesday, 18 April 2006 01:00 (twenty years ago)