Bài 1:
$\lim_{n \to \infty }(\frac{1}{\sqrt{1}}+\frac{1}{\sqrt{2}}+\frac{1}{\sqrt{3}}+...+\frac{1}{\sqrt{n}})$
Bài 2:
$\lim_{n \to \infty }(\frac{1+2+3+...+n}{n^{2}+2})$
Bài 3:
$\lim_{n \to \infty }\left ( \frac{3sinn+4cosn}{n+1} \right )$
Bài 4:
$\lim_{n \to \infty }\left ( \frac{1+a+a^{2}+a^{3}+...+a^{n}}{1+b+b^{2}+b^{3}+...+b^{n}} \right )$
Bài 5:
$\lim_{n \to \infty }\left ( \frac{\frac{1}{2}+1+\frac{3}{2}+...+\frac{n}{2}}{\frac{1}{4}n^{2}+n+2} \right )$
Help me!!!
Edited by Nidalee Teemo, 19-12-2015 - 15:25.