Convergence & divergence of telescoping series  Sequence and series
Convergence & divergence of telescoping series
Lessons
Notes:
There is no exact formula for a telescopic series.

2.
Convergence of Telescoping Series
Show that the following series are convergent and find its sum:

a)
$\sum_{n=1}^{\infty}\frac{4}{n^2+7n+12}$

b)
$\sum_{n=1}^{\infty}\frac{1}{n^2+4n+3}$
