Question Number 28621 by abdo imad last updated on 28/Jan/18
![let give u_n =(([(√(n+1])) −[(√(n])))/n) find Σ u_n .](https://www.tinkutara.com/question/Q28621.png)
$${let}\:{give}\:{u}_{{n}} =\frac{\left[\sqrt{\left.{n}+\mathrm{1}\right]}\:−\left[\sqrt{\left.{n}\right]}\right.\right.}{{n}}\:\:\:{find}\:\:\Sigma\:{u}_{{n}} \:\:. \\ $$
let-give-u-n-n-1-n-n-find-u-n-