\"\"

\

The series \"\".

\

Consider the telescoping sum is \"\".

\

\"\"

\

\"\".

\

Find \"\".

\

\"\"

\

\"\"

\

\"\"

\

\"\"

\

\"\".

\

Since the \"\" is a real number, the series \"\" is convergent.

\

The series is convergent and \"\".

\

\"\"

\

The series is convergent and \"\".