1. The problem statement, all variables and given/known data Problem is attached in this post. 2. Relevant equations Problem is attached in this post. 3. The attempt at a solution I don't know how to approach this problem at all. How exactly do I find what function an is? Also what do I do after finding an? What I did was let an=n then ended up doing Lim 1/n as n -> ∞ and ended up getting 0 as my answer. The correct answer is that the series diverges.