# Calculus: Absolute/Conditional Convergence or Divergence Question!

1. Jun 15, 2013

### zachem62

1. The problem statement, all variables and given/known data

This is the problem:

http://i.imgur.com/AtISqng.jpg

its the first series, not the second one with the cos

2. Relevant equations

3. The attempt at a solution

so anyways i did this question but i just had one doubt. in every other question like this that i've done, the series summation goes from n=1 or something and goes to infinity. in this question, the summation starts at n=2 and goes to...just n. so can i solve this just as if the summation was going to infinity or do i have to do it differently?

Thanks!

2. Jun 15, 2013

### LCKurtz

That is undoubtedly a typo and should go to infinity. There would be no notion of convergence for a finite number of terms plus it makes no sense for an index to go to itself.