*looks at jim*
Quote from: Haunted on June 04, 2009, 10:10:38 AM*looks at jim*Since Edison's answer looks right (and for the second one is exactly right) I can't see the reason to post myself.
Quote from: Haunted on June 04, 2009, 10:10:38 AM*looks at jim*Since Edison's answer looks right (and for the second one is exactly right) I can't see the reason to post myself.Applying D'alambert's ratio test to the first series is enough to show that it diverges since as n tends to infinity an+1/an tends to 1+O(1/n) which is greater than 1.