On Thu, 12 Jan 2012, Paul A. Rubin wrote:
1. IMHO inline equations should never be long. If it's long enough to give you margin/column width headaches, I'd do it display mode, which gives you access to multiline equation formats.
Paul, Er, ... according to the detailed Math manual, "Only inline formulas are allowed inside tables." So, that's that.
2. Rotating a table in a float should be simple (no ERT required). Put the table in a table float, right click the handle of the float, pick Settings, and check "Rotate sideways".
That was my problem: I kept looking for the settings by clicking on the table itself or the table tools that display when the cursor is within the table. I don't think that in all the years I've been using LyX that I ever right-clicked on the grey square reading 'Figure' or 'Table'. How interesting! I do the above, save the document, and look at the dvi preview. It's not rotated but in the upper right corner of the page and off both margins. But ... A-ha! It is rotated in the pdflatex output. It occurred to me that sometimes the dvi preview does not display properly while the compiled output does. Thanks for the lesson, Rich