Integral test and divergence test

Use the integral test to determine whether the series converges. 18) a) _ 3n n2 + 3 b) E cos 1 c) n2e-n3 1 n=1 n2 d) > 7n - 1 n=1 n=1 n=1 e) E 1 f) E n n=0 n2 + 1 n=2 (n2 + 1)3/2 Use the Divergence Test to determine whether the series diverges. 19) a) Z k k K2 1 2k + 1 b ) E E d) E k=2 k=1 In(k) k=1 2k 1000 + k K=0