Σ If lim an does not exist or if lim an + 0, then the series An is divergent. n 1) Use the method of Test For Divergence to determine which of the following series is divergent. n +1 a) n3 +2 n=1 5n2...

Extracted text: Σ If lim an does not exist or if lim an + 0, then the series An is divergent. n 1) Use the method of Test For Divergence to determine which of the following series is divergent. n +1 a) n3 +2 n=1 5n2 + 4x + 8 In 3n2 b) 2х + 7 n=1 2) For the method of Test For Divergence, we use it to determine a series is divergent or not. NEVER USE TEST FOR DIVERGENCE TO CONCLUDE A SERIES IS CONVERGENT!!!! This means, lim an = 0 does not imply the series converges. For the second problem, please give an example of a series such that lim An = but the series actually diverges.