Running:
T, radcan;
returns the korrekt result.
Executing the following statements yield two different results (the result of simpsum is incorrect):
T: sum((2^(k+i))/(2^(k+i)+2^(i)),i,0,k);
T, simpsum;
ev(T, [k=0]);
T, simpsum returns 0 on my system, where it should be (according to wolfram alpha):
(2^k*(1 + k))/(1 + 2^k)
wxWidgets: 2.8.11
Unicode support: yes
Maxima version: 5.25.0
Lisp: CLISP 2.49 (2010-07-07)
Running:
T, radcan;
returns the korrekt result.
I forgot to mention in the last comment: While this provides a way to calculate the correct result, simpsum should still not return a *WRONG* value!
Just a reminder for whoever cares:
sum((2^(k+i))/(2^(k+i)+2^(i)),i,0,k), simpsum;
still returns 0 (which is wrong) in the latest maxima version.