Test the convergence of the series Σ cos1/n from n=1 to ∞ | Test the convergence of the series Σ root(n/(n+1))
1. Test the convergence of the series \sum_{n=1}^{\infty}cos\frac{1}{n}
![](https://meruprastaar.com/wp-content/uploads/2022/04/test-20series-300x93.jpg)
2.Test the convergence of the series \sum_{n=1}^{\infty}\sqrt{\frac{n}{n+1}}
![](https://meruprastaar.com/wp-content/uploads/2022/04/test-20the-20convergence-20of-20the-20series-20-300x143.png)