Series Let En- a, be a series such that a, = 3(n+2)1 (n+1)2(2n) By using the ratio test, we find that En=1 an converges since None of these An+1 lim 3) En=1an diverges since 2n=1an converges since lim 72 00 antl 0 an+1 lim = 3 Ac be %3D