Limit comparison test and alternating series

Use the limit comparison test to determine if the series converges or diverges. DO 22) a) _ 8Vn 6 4n3/2 - 9n + 7 b) E n=1 5n2 + n + 4Vn n=1 00 E An + 2 5n2 + 6 c) 7 d) > n=1 Von3 + 6n + 2 e) _ 4n - 9 Inn+ 1 n=1 n' + 7n + 6 n=1 Determine convergence or divergence of the alternating series. 23) a) _ (-1)n b ) E (-1)n 7n3 + 5 c) E (-1)n 7n8 + 4 n4/3 n=1 n=1 n=1 2n6 + 2