1. The problem statement, all variables and given/known data Determine wheter the series is convergent or divergent. If it convergent, approximate the sum of the series correct to four decimal places. heres the equation: http://img251.imageshack.us/img251/2261/46755781zg9.png [Broken] 2. Relevant equations 3. The attempt at a solution This appears to be an alternating geometric series, Would it be okay to move the exponent k over everything? in other words: ( (-1)/k) )^k So then it looks alot like a geometric series, so then It converges by the rules of an alernating series, it is decreasing and it is approaching zero. So then to find its sum, i would do so by geometric series right? first term would be starting at k = 2, so: 1/2? then use 1/2 divided by 1 -r Am i on the right track? what is r??? is it also, 1/2?