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There have been 35 items by volehoangdck269 (Search limited from 17-05-2020)

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CMR $A= \frac{a}{a^2+2b+3... in Bất đẳng thức và cực trị Started by anny anh, 02-06-2016	4 replies 1817 views	Haht 04-12-2017
Đề thi tuyển sinh vào lớp10 chuyên Phan bội Châu năm 2016... in Tài liệu - Đề thi Started by hoaichung01, 10-06-2016 đề thi, tuyển sinh lớp 10 1 2	34 replies 15865 views	DungHDNA31 23-03-2017
A=$\sum a(ab-1)$$\geq 2$ in Bất đẳng thức và cực trị Started by volehoangdck269, 08-06-2016	6 replies 621 views	happyfree 15-06-2016
$(x^{2}-2)\vdots (xy+2)$ in Số học Started by volehoangdck269, 10-06-2016	6 replies 1419 views	Cuongpa 12-06-2016
Tìm Min và Max của P=x+y in Bất đẳng thức và cực trị Started by Master Kaiser, 08-06-2016	3 replies 660 views	Master Kaiser 09-06-2016
min EF in Bất đẳng thức và cực trị Started by volehoangdck269, 07-06-2016	0 replies 351 views	volehoangdck269 07-06-2016
M=$\sum \frac{a}{b+2c+3d... in Bất đẳng thức và cực trị Started by volehoangdck269, 04-06-2016	6 replies 669 views	TanSan26 06-06-2016
chứng minh định lý Fagnano :v in Bất đẳng thức và cực trị Started by volehoangdck269, 04-06-2016	6 replies 1994 views	volehoangdck269 05-06-2016
M=$\sum \frac{ab}{3+c^... in Bất đẳng thức và cực trị Started by volehoangdck269, 03-06-2016	3 replies 309 views	volehoangdck269 04-06-2016
M=$\sum a^{2}+\frac{\... in Bất đẳng thức và cực trị Started by volehoangdck269, 03-06-2016	1 reply 288 views	cristianoronaldo 03-06-2016
Cho $a^2 + b^2 \vdots ab$ . Tính $A=... in Đại số Started by Psycho, 31-05-2016	2 replies 464 views	volehoangdck269 31-05-2016
M=$x^{2}y + y^{2}z + z^{2... in Bất đẳng thức và cực trị Started by volehoangdck269, 30-05-2016	2 replies 387 views	cristianoronaldo 31-05-2016
A=$\frac{\sqrt[3]{(x^{2... in Bất đẳng thức và cực trị Started by volehoangdck269, 29-05-2016	1 reply 265 views	Nam Duong 29-05-2016
$x^{3}+y^{3}+z^{3}=n(... in Số học Started by volehoangdck269, 28-05-2016	1 reply 320 views	xuantungjinkaido 28-05-2016
$n!$ là số chính phương in Số học Started by Oo Nguyen Hoang Nguyen oO, 28-05-2016	3 replies 453 views	volehoangdck269 28-05-2016
$\sum \dfrac{3a^3+7b^3}{2a+... in Bất đẳng thức và cực trị Started by dunghoiten, 22-05-2016	3 replies 377 views	leminhnghiatt 23-05-2016
Tìm GTLN của biểu thức: $P = \frac{x}... in Bất đẳng thức và cực trị Started by nuoccam, 23-03-2016	8 replies 436 views	thuylinhnguyenthptthanhha 20-05-2016
tìm n \in Z^{+} sao cho phương trình s... in Số học Started by manh nguyen truc, 19-05-2016	7 replies 433 views	Oo Nguyen Hoang Nguyen oO 20-05-2016
Tìm GTNN của: $P \doteq \frac{x^{2}+y^{2}}... in Đại số Started by Quan Nguyen, 19-05-2016	6 replies 528 views	Oo Nguyen Hoang Nguyen oO 20-05-2016
Cho $x,y(x>y)$ là các số nguyên dương thoả... in Đại số Started by SKT T1 SPAK, 19-05-2016	1 reply 351 views	volehoangdck269 19-05-2016
$\overline{ab}^{2}=(a+b)^... in Số học Started by volehoangdck269, 16-05-2016	2 replies 237 views	Hoangtheson2611 16-05-2016
Tìm min, max của S= $\sqrt{3}ab+b^... in Bất đẳng thức và cực trị Started by gemyncanary, 13-05-2016	2 replies 317 views	thank you 13-05-2016
a; b và c là 3 cạnh của tam giác sao cho $a\geq... in Bất đẳng thức và cực trị Started by volehoangdck269, 12-05-2016	2 replies 171 views	volehoangdck269 12-05-2016
$(a+b+c)^{2}\leq 9ab$ in Bất đẳng thức và cực trị Started by volehoangdck269, 05-05-2016	2 replies 259 views	manhhung2013 05-05-2016
1 + $\frac{1}{2^{2}... in Số học Started by volehoangdck269, 04-05-2016	1 reply 340 views	the unknown 05-05-2016

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