1. The problem statement, all variables and given/known data [itex]\sum[/itex] ftom n=1 to [itex]\infty[/itex] (-2)n/nn. 3. The attempt at a solution limn->[itex]\infty[/itex] | (-2)n+1/(n+1)n+1) x nn/(-2)n | = |-2|limn->[itex]\infty[/itex] |(n/n+1)n*(1/n+1) | If it were only (n/n+1) then would the answer be 2e? Either way, how do you sole this the way it is?