Direct comparision test :

Let  for all .

1. If  converges, then  converges.

2. If  diverges, then  diverges.

The series is .

Consider  and .

 for all  on .

The series  is converges where .

Using direct comparision test if the series  is converges then  is converges.

Therefore, the series  is converges.

The series  is converges.