DETAILS Let (-1)n-1un be an alternating series. The Alternating Series Test (AST) has 3 conditions to check for convergence. They are: O (1) un can alternate. (2) un un+1. (3) lim Un=0. no O (1) un 0 for all n. (2) un un+1 for n large enough. (3) lim_un=0. O (1) un 0 for all n. (2) uns un+1 for n large enough. (3) lim un=0. n-co O (1) un 0 for all n. (2) un un+1 for n large enough. (3) lim un0.