$\"\"$

The series is $\"\"$ .

Consider the series $\"\"$ .

The series is in the form of geometric series.

Geometric series:

The geometric series $\"\"$ is converges if and only if the value of $\"\"$ .

Compare the series with general form.

Here $\"\"$ .

The series is converges absolutely.

$\"\"$

The series $\"\"$ converges absolutely.