Đến nội dung

Nguyen Kieu Phuong

Nguyen Kieu Phuong

Đăng ký: 29-05-2015
Offline Đăng nhập: Riêng tư
*****

$1, \sum_{n=1}^{+\infty }\frac{ln(n)}...

06-02-2017 - 20:13

xét sự hội tụ:

$1, \sum_{n=1}^{+\infty }\frac{ln(n)}{n\sqrt{n+2}}$ 

 

$2, \sum_{n=1}^{+\infty }\frac{n^2}{(-1)^n+2^n}$

 

$3, \sum_{n=1}^{+\infty }\frac{n^n}{(n+3)^{n+2}}$


$\lim_{x\to+\infty }(\frac{sinx-3x}{c...

09-12-2016 - 20:13

tính 

$\lim_{x\to+\infty }(\frac{sinx-3x}{cosx-3x})^x$


$\lim_{x\to0}\frac{e^x-e^{tanx}}...

09-12-2016 - 09:21

tính: 

$\lim_{x\to0}\frac{e^x-e^{tanx}}{arcsin{x^3}}$


$I=\lim_{x\to+\infty }[x(\sqrt{x^3+1}-...

06-12-2016 - 20:12

tính

$I=\lim_{x\to+\infty }[x(\sqrt{x^3+1}-\sqrt[3]{x^2+1})]$


$\lim_{x\to0}(\frac{e^{tan2x}-3^{x^2+...

30-11-2016 - 10:03

$\lim_{x\to0}(\frac{e^{tan2x}-3^{x^2+1}}{2x-2})^{\frac{1}{x+ln(1-x)}}$