I have a series and i have a problem doing the ratio test....
Σ k=1 to infinity, (-1)^k (1/2 + 1/k)^k
i face my problem with the 1/k :/
edit: (i have to actually examine the absolute convergence and i think i have to first examine the ratio..)
i have one further question. how would you calculate absolute convergence? wolfram alpha says that the ratio test is conclusive and that the series converges, but i have no idea how he comes to the result..all i get is a bunch of terms which i can't simplify..help?