![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
Giúp t câu này với. Xin cảm ơn!
- [tex]lim=\frac{2^{3n+2}+7^{n+1}}{3^{n+2}-2^{3n}}[/tex]
- [tex]lim=\frac{4^{n+1}+6^{n+2}}{5^{n}+8^{n}}[/tex]
- [tex]lim=(\frac{1}{1.3}+\frac{1}{3.5}+...+\frac{1}{(2n-1).(2n+1)})[/tex]