The integral test :

If  is positive, continuous and decreasing for  and , then  and either both converge or both diverge.

The integral series is .

The summation notation of series is .

Let the function be .

Find the derivative of the function.

 for .

 is positive, continuous and decreasing for .

 satisfies the conditions of Integral Test.

Integral Test is applicable for the series.

Integral test :

Consider .

.

Consider integral .

Apply general power rule of integration: .

.

.

Therefore, the series  is diverges.

The series   is diverges.