[BUG] weird Zeta function

[Joe Horn]

(01-13-2014 09:48 PM)Tugdual Wrote:  

(01-13-2014 07:51 PM)Joe Horn Wrote:  ... "Change apparent integers into exact integers" in the CAS Settings (page 1, end of 3rd line) ...

... I didn't even notice this option in CAS parameters (a simple check box with no further explanation...)

The explanation is at the bottom of the screen, immediately above the soft keys. Those prompts are often the only explanation offered by input forms.