Just go ahead...You will find the way !
Algebra
Level
4
\[Given :: \ \displaystyle S_{n}=\sum_{r=1}^n t_{r}= \frac{n(2n^{2}+9n+13)}{6}\] \[Find \quad \displaystyle \sum_{r=1}^\infty \frac{1}{r.\sqrt{t_{r}}}\]
You can try my other Sequences And Series problems by clicking here : Part II and here : Part I.
by
Sandeep Bhardwaj