Small challenge

[J-F Garnier]

(04-22-2023 03:29 PM)Valentin Albillo Wrote:  It took me all of 5 seconds to deduce it.

Wow, so fast. When I searched for the formula some times ago, I needed a little more time...

(04-22-2023 03:33 PM)Massimo Gnerucci Wrote:  Found the series, but cannot display the exponent with positive sign on the 71B...

No, the exponent sign doesn't matter.
As Valentin found it, the problem is that the (e.g.) 71B doesn't give the same exact results.

Now, 2nd part: which HP machine gives the same numeric results, independently of the display format?

J-F