Formulae/topics in 2U that aren't covered in 3U (1 Viewer)

[Sanical]

Hey, I'm going to wing my 2U exam but don't want to completely fail so what are the topics/formulae in 2U that you must know that aren't in 3U?
All I can think of currently is:
- probability
- Superannuation (Is this also in 3U? I see this in 3U James Ruse all the time)
- Growth and decay formula is different