\"\"

\

The series is \"\".

\

Divergence test :For the series \"\", If \"\", then the series \"\" is divergent.

\

\"\".

\

Here \"\".

\

\"\"

\

Note: \"\" if \"\".

\

\"\"

\

Since \"\", then the series \"\" is divergent.

\

\"\"

\

The series is divergent.