new to prime ARG? INV?

[sirrick]

HI everybody!!

after 15 years my loyal HP48GX stopped working and it was because I spelt a whole coca cola on it!!!! FOOL!!
well, because I'm SO used to the RPN, I thought that the Prime was my best shot.
my first impression was pretty good but now after just 2 days, I cannot find some functions that I use a lot, one is the ARG button and also 1/x (inv) button.
do you know where they are?

and last issue is with the unit conversion, it was SO easy in the 48GX, is there a shorter way than this popup menus in the Prime?

I know I have this problems because I haven't red the manual, but I think this basic functions should be more available

any help?

thanks!