if a, b, c>0, then prove: $ \frac{a+b}{\sqrt{a^{2}+a b+b^{2}+b c}}+\frac{b+c}{\sqrt{b^{2}+b c+c^{2}+c a}}+\frac{c+a}{\sqrt{c^{2}+c a+a^{2}+a b}} \geq 2+\sqrt{\frac{a b+b c+c a}{a^{2}+b^{2}+c^{2}}}$

Skip to content

100% Private Proxies – Fast, Anonymous, Quality, Unlimited USA Private Proxy!

Get your private proxies now!

DreamProxies - Cheapest USA Elite Private Proxies
100 Private Proxies
200 Private Proxies
400 Private Proxies
1000 Private Proxies
2000 Private Proxies
ExtraProxies.com - Buy Cheap Private Proxies
Buy 50 Private Proxies
Buy 100 Private Proxies
Buy 200 Private Proxies
Buy 500 Private Proxies
Buy 1000 Private Proxies
Buy 2000 Private Proxies
ProxiesLive
Proxies-free.com
New Proxy Lists Every Day
Proxies123