Just a curious mathematical result

[DA74254]

(03-06-2018 02:10 PM)TheKaneB Wrote:  

(03-06-2018 01:59 PM)DA74254 Wrote:  Works on SM DM42 but gives "1" in Prime "home" rpn and "1." in Prime CAS

Well, it's the correct answer given the HP Prime's number of digits / bits in the two modes.

Yes, I'm aware of that. But if you calculate a large number, say; 99^20, you may hit "view" and you can obtain a number 100's of digits long. Then 1/x and you get a resiprocal of that large number. Though, the "1." in CAS is absolute. You won't be able to evaluate it, only obtain the approx version of the formula stated by OP.