Determine whether the series converges or diverges. Clearly indicate how you determined each sigma n=1 infinity n^2/n^3 +4 sigma n=1 infinity Cos^2(n)/3n^4 +1 Use Limit comparison test to determine convergence or diverges sigma n=1 infinity 3/5n+6 sigma n=1 infinity 2+5^n/1+7^n Determine whether the series is absolutely convergent, conditionally convergent or divergent sigma n=1 infinity (-2)^n/(arctan n)^n sigma n=1 infinity (-3)^n/(2n+1)! Sigma n=1 infinity (-1)^n-1 n^2/n^3+7