Need help for some HP Prime calculus/functions

[Joe Horn]

Your large screen shot is from a very old and obsolete version of the User Guide. It depicts the now-deprecated Trig Explorer in obsolete old firmware versions of Prime. All the separate explorer apps have been rolled into a single "Explorer" app. What you need is Edition 3 of the User Guide (December 2017). It shows correct screen shots from the new Explorer / Trig, which does not label the x and y axes like the former Trig Explorer app did.

Disclaimer: I *think* the above is correct, but if it's not, somebody here will soon correct me, for which I thank them in advance.