HP-Prime safe to buy?

[Matt Agajanian]

I improvised on grsbanks' advice and downloaded the free version of the Prime on my iPad. In true calculator aficionado style, it took me about five minutes to get the gist of how to operate the Prime, set up RPN entry as well as getting acquainted with the user interface.

Next because it felt so so simply (or I caught on rather quickly), I decided to operate in CAS mode and enter our favorite Mach equation. Too easy! So, next, I decided to plot our HP-34C manual sine integral and integrate it. Yup, again too easy.