SOLUTION: Find the general term (1,1/3,-1/6,1/10,-1/15,1/21,....)

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Question 1025533: Find the general term
(1,1/3,-1/6,1/10,-1/15,1/21,....)

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
I think you miswrote the first term--it should be -1. With that said the general term of the series is
a%5Bn%5D+=+%282%2A%28-1%29%5En%29%2F%28n%28n%2B1%29%29.