LyX | LGT (4/5) — Math editor

Now let's try a bit of math. (See the Insert menu to guess how I did the footnote!) Simply click on Insert->Math->Inline formula.
This inserts a small blue box which will contain the formula.
Start typing. To get a superscript, press "^" (a subscript is "_"); this raises the level of the box to inform you that you're in a superscript.
To get a Greek letter (in this case, "pi"), click on Insert->Math->Math Panel,
then chose Greek from the "Symbols" choice,
then finally on pi. Voilà, pi. Of course, there are much faster ways of doing this, like "\pi", but keyboard shortcuts and TeX commands are a whole other tutorial!
Let's finish this off and see how it looks.
You can insert other stuff via the panel, via Insert->Math or directly via commands. Have a look at the result. The LyX screenshot shows the optional preview-latex wysiwyg mode.