chứng minh với mọi a,b,c dương:
$\frac{a}{\sqrt{a^{2}+3bc}}+\frac{b}{\sqrt{b^{2}+3ca}}+\frac{c}{\sqrt{c^{2}+3ab}}\geq 1,5$
Edited by tpdtthltvp, 27-06-2016 - 11:42.
chứng minh với mọi a,b,c dương:
$\frac{a}{\sqrt{a^{2}+3bc}}+\frac{b}{\sqrt{b^{2}+3ca}}+\frac{c}{\sqrt{c^{2}+3ab}}\geq 1,5$
Edited by tpdtthltvp, 27-06-2016 - 11:42.
0 members, 1 guests, 0 anonymous users