12-07-2015, 10:06 PM

Calculating the following double sum causes a calculator crash:

[attachment=2931]

While I understand that the closed form is nasty (involves the Psi function, plus the Euler-Mascheroni constant), the Prime could just say "no idea" instead of crashing. (Solution from Wolfram Alpha. TI nSpire CAS just returns the expression.)

[attachment=2932]

This is Software Version 2015 6 17 (8151), HW ver C, CAS version 1.1.2-11, OS 0.037.526

[attachment=2931]

While I understand that the closed form is nasty (involves the Psi function, plus the Euler-Mascheroni constant), the Prime could just say "no idea" instead of crashing. (Solution from Wolfram Alpha. TI nSpire CAS just returns the expression.)

[attachment=2932]

This is Software Version 2015 6 17 (8151), HW ver C, CAS version 1.1.2-11, OS 0.037.526