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CMR: $\frac{a}{b}+\sqrt{\frac{b}{c}}+... in Bất đẳng thức và cực trị Started by ThichHocToancom, 01-02-2019 bđt, am-gm, cô-si Last Post by ThichHocToancom, 04-02-2019	2 replies 1020 views	ThichHocToancom Posted 01-02-2019
Chứng minh $2(a+b+c)-abc\geq 0$ in Bất đẳng thức và cực trị Started by Pretty Puppy, 28-11-2018 bđt Last Post by toihoctoan, 06-01-2019	1 reply 751 views	toihoctoan Posted 28-11-2018
$\frac{a^{2}}{a^{... in Bất đẳng thức và cực trị Started by pmt22042003, 19-12-2018 bđt Last Post by vmf999, 19-12-2018	1 reply 396 views	vmf999 Posted 19-12-2018
$P=9(\frac{1}{a^2}+\fr... in Bất đẳng thức và cực trị Started by trieutuyennham, 01-11-2018 bđt Last Post by trieutuyennham, 01-11-2018	0 replies 469 views	trieutuyennham Posted 01-11-2018
$1 + \frac{1}{2}x^2 \g... in Bất đẳng thức và cực trị Started by PhanDHNam, 27-09-2018 bđt, hinhhoc Last Post by DOTOANNANG, 07-10-2018	1 reply 959 views	DOTOANNANG Posted 27-09-2018
$P=\frac{3}{2}\|(x-y)(y-z)(z... in Bất đẳng thức và cực trị Started by trieutuyennham, 13-09-2018 bđt Last Post by trieutuyennham, 13-09-2018	0 replies 566 views	trieutuyennham Posted 13-09-2018
CM bất đẳng thức in Bất đẳng thức và cực trị Started by Diepnguyencva, 30-08-2018 bđt Last Post by yrt, 30-08-2018	1 reply 414 views	yrt Posted 30-08-2018
\[\sum a^{7}\geq \sum a^... in Bất đẳng thức và cực trị Started by DOTOANNANG, 14-02-2018 bđt Last Post by INXANG, 13-08-2018	3 replies 864 views	INXANG Posted 14-02-2018
Chứng minh rằng: $\sum cos(\frac{A... in Hình học phẳng Started by vttPapyrus, 09-08-2018 vectơ, bđt, hình học phẳng Last Post by vttPapyrus, 09-08-2018	0 replies 618 views	vttPapyrus Posted 09-08-2018
CMR: $\frac{4^a}{3-4^a} +... in Bất đẳng thức và cực trị Started by dat102, 06-08-2018 bđt, lũy thừa Last Post by canletgo, 06-08-2018	2 replies 789 views	canletgo Posted 06-08-2018
$Cho a,b,c>0 thỏa mãn a+b+c=3 $Tìm min P=... in Bất đẳng thức và cực trị Started by cnhi, 06-03-2018 bđt Last Post by ntbt273, 04-08-2018	1 reply 437 views	ntbt273 Posted 06-03-2018
$a\sqrt{1- bc}+ b\sqrt{1- c... in Bất đẳng thức - Cực trị Started by DOTOANNANG, 16-01-2018 bđt Last Post by DOTOANNANG, 28-06-2018	1 reply 527 views	DOTOANNANG Posted 16-01-2018
$\sum \frac{a}{\sqrt... in Bất đẳng thức và cực trị Started by hoangkimca2k2, 13-04-2018 bđt Last Post by Arthur Pendragon, 28-06-2018	2 replies 423 views	Arthur Pendragon Posted 13-04-2018
$\sqrt{x^{2}+y^{2}... in Bất đẳng thức và cực trị Started by hoangkimca2k2, 13-06-2018 bđt Last Post by DOTOANNANG, 19-06-2018	2 replies 566 views	DOTOANNANG Posted 13-06-2018
$\sum \frac{1}{a^{2... in Bất đẳng thức và cực trị Started by hoangkimca2k2, 13-06-2018 bđt Last Post by DOTOANNANG, 18-06-2018	3 replies 616 views	DOTOANNANG Posted 13-06-2018
$\sum \frac{a+b-2c}{(5a+5b+... in Bất đẳng thức và cực trị Started by trieutuyennham, 26-04-2018 bđt Last Post by DOTOANNANG, 18-06-2018	2 replies 622 views	DOTOANNANG Posted 26-04-2018
cho x,y,z >1 tm x+y+z=xyz in Bất đẳng thức và cực trị Started by mrdoctorlee, 16-06-2018 bđt Last Post by DOTOANNANG, 18-06-2018	2 replies 1363 views	DOTOANNANG Posted 16-06-2018
$x^{2}+y^{3}\geq x^{3... in Bất đẳng thức và cực trị Started by hoangkimca2k2, 11-06-2018 bđt Last Post by DOTOANNANG, 12-06-2018	3 replies 673 views	DOTOANNANG Posted 11-06-2018
$\frac{1}{a^{2}+b^... in Bất đẳng thức và cực trị Started by hoangkimca2k2, 11-06-2018 bđt Last Post by lenguyenkhanh, 11-06-2018	2 replies 1709 views	lenguyenkhanh Posted 11-06-2018
$abc+bcd+cde+dea+eab\leq 5$ in Bất đẳng thức và cực trị Started by hoangkimca2k2, 11-06-2018 bđt Last Post by DOTOANNANG, 11-06-2018	1 reply 558 views	DOTOANNANG Posted 11-06-2018
$\frac{1}{a+1}+\frac... in Bất đẳng thức và cực trị Started by hoangkimca2k2, 06-06-2018 bđt Last Post by conankun, 07-06-2018	4 replies 554 views	conankun Posted 06-06-2018
$(\sum a+...)(\sum \frac{1}... in Bất đẳng thức và cực trị Started by pmt22042003, 27-05-2018 bđt, tìm min Last Post by pmt22042003, 04-06-2018	5 replies 736 views	pmt22042003 Posted 27-05-2018
BĐT :Help me in Bất đẳng thức và cực trị Started by VuTroc, 04-06-2018 bđt hay, bđt Last Post by VuTroc, 04-06-2018	0 replies 502 views	VuTroc Posted 04-06-2018
$\sqrt{a-1}+\sqrt{b-1}+\sqrt{c-1}... in Bất đẳng thức và cực trị Started by VuTroc, 26-05-2018 bđt, olympic 1998, iran 1998 Last Post by DOTOANNANG, 30-05-2018	2 replies 1586 views	DOTOANNANG Posted 26-05-2018
Cho $a, b, c> 1$ in Bất đẳng thức và cực trị Started by MarkGot7, 29-05-2018 bđt Last Post by conankun, 30-05-2018	2 replies 573 views	conankun Posted 29-05-2018

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