What do you use for documents with equations?

[Bill Freeman]

	I've got a little article with a bunch of math to write, and
want to use an open source GUI tool.  I've used lyx, and it's OK, but
I use it so rarely that I need to re-learn it every time.

	Does abiword or open office do a good job on equations?  Are
there other tools that I should look at?  Ideally it will mix not only
text and equations, but also plotted (geometry text style) figures.
(I guess that you can embed an image, at least, in any of them.)

							Thanks, Bill