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There have been 82 items by vipboycodon (Search limited from 30-05-2020)

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$\left\{\begin{matrix}... in Phương trình - hệ phương trình - bất phương trình Started by Viet Hoang 99, 07-12-2014	6 replies 418 views	vipboycodon 07-12-2014
$P=\sum\sqrt{a^{2}+\fr... in Bất đẳng thức và cực trị Started by Phuong Mark, 02-12-2014	6 replies 529 views	lethanhson2703 05-12-2014
$a+b\geq \frac{4ab}{1+ab... in Bất đẳng thức và cực trị Started by LittleAquarius, 26-01-2014	6 replies 494 views	lahantaithe99 26-01-2014
Chứng minh bất đẳng thức in Bất đẳng thức và cực trị Started by phimphat, 19-12-2013	6 replies 356 views	vipboycodon 12-01-2014
Tìm GTNN \[ {x^4 + y^4 } \] in Đại số Started by baybay1, 12-09-2012	5 replies 7226 views	vipboycodon 19-01-2014
Topic bất đẳng thức Cauchy Schwarz in Bất đẳng thức - Cực trị Started by LNH, 21-11-2013	5 replies 8110 views	vipboycodon 20-01-2014
Cho $a,b > 0$ và $a+b=1$ Tìm min... in Bất đẳng thức và cực trị Started by zzhanamjchjzz, 07-03-2014	5 replies 488 views	LCcau 07-03-2014
$8x^2+3x+7-6x\sqrt{x+8}=0$ in Phương trình, hệ phương trình và bất phương trình Started by chieckhantiennu, 04-12-2014	5 replies 1814 views	chieckhantiennu 05-12-2014
T=$(\sqrt{x^2+2013}+x)(\sqrt... in Đại số Started by vipqiv, 05-12-2014 tính	4 replies 1622 views	Mary Huynh 05-12-2014
Bài toán giá trị tuyệt đối lớp 8 in Đại số Started by Lê Khánh Nhi, 12-01-2014	3 replies 599 views	vipboycodon 15-01-2014
CM Bất đẳng thức in Bất đẳng thức và cực trị Started by nguyenkimanh12, 04-02-2014	3 replies 254 views	vipboycodon 04-02-2014
GIá trị nhỏ nhất in Đại số Started by Baarka, 25-01-2014	3 replies 294 views	vipboycodon 25-01-2014
$\frac{1}{a^{2}+1... in Bất đẳng thức và cực trị Started by Phuong Mark, 10-01-2014	3 replies 303 views	vipboycodon 10-01-2014
$ax^{1994}+bx^{94}+cx^{1994... in Đại số Started by vipboycodon, 07-12-2014	2 replies 521 views	vipboycodon 07-12-2014
$\dfrac{(b+c-a)^2}{(b+c)^2+a^2... in Bất đẳng thức và cực trị Started by vipboycodon, 07-12-2014	2 replies 356 views	dogsteven 07-12-2014
c) Giá trị nhỏ nhất của biểu thức $x-\sqrt... in Đại số Started by laquochiep3665, 06-12-2014	1 reply 181 views	vipboycodon 06-12-2014
$b^2+(c-2a)^2 > 3a^2$ in Đại số Started by vipboycodon, 06-12-2014	1 reply 210 views	baotranthaithuy 06-12-2014
CM Bất đẳng thức in Bất đẳng thức và cực trị Started by nguyenkimanh12, 03-02-2014	1 reply 163 views	vipboycodon 04-02-2014
Chứng minh rằng $x\sqrt{y}-y\sqr... in Bất đẳng thức và cực trị Started by DarkBlood, 19-01-2014	1 reply 206 views	vipboycodon 19-01-2014
Cho 3 số x, y, z thỏa mãn $\left\{... in Bất đẳng thức và cực trị Started by nguyenhongsonk612, 12-01-2014	1 reply 180 views	vipboycodon 12-01-2014
$a,b \epsilon [o,1]$ in Đại số Started by Ham học toán hơn, 19-01-2014	1 reply 101 views	vipboycodon 19-01-2014
Tìm min của biểu thức in Bất đẳng thức và cực trị Started by rainbow99, 20-01-2014	1 reply 95 views	vipboycodon 20-01-2014
Tìm min : $A = (a+b+c)+2(\dfrac{1}... in Bất đẳng thức và cực trị Started by vipboycodon, 23-01-2014	1 reply 292 views	banhgaongonngon 23-01-2014
Chứng minh $a^2+b^2+c^2+6\sqrt{abc}... in Bất đẳng thức và cực trị Started by vipboycodon, 03-12-2014	1 reply 102 views	Chung Anh 03-12-2014
Tính độ dài cạnh tam giác. in Hình học Started by vipboycodon, 29-01-2014	0 replies 131 views	vipboycodon 29-01-2014

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