Jun 19, 2013 Thread starter #1 Fernando Revilla Well-known member MHB Math Helper Jan 29, 2012 661 I quote a question from Yahoo! Answers Use the ratio test to solve:? 1) k=1--> inf (1-(1/k))^(3k) 2)Is it convergent or divergent? Click to expand... I have given a link to the topic there so the OP can see my response.