$\"\"$

The series is $\"\"$ .

$\"\"$ .

$\"\"$

Therefore, the series approaches to $\"\"$ .

Observe the graph $\"\"$ :

The value of the graph at $\"\"$ is $\"\"$ .

The series approaches to $\"\"$ .

The series matches the graph $\"\"$ .

$\"\"$

Prove analytically.

The series is $\"\"$ .

The series is a geometric series.

Sum of the $\"\"$ terms in the geometric series $\"\"$ is $\"\"$ .

$\"\"$

$\"\"$ .

The series approaches to $\"\"$ .

$\"\"$

The series matches the graph $\"\"$ .