$\sqrt{a^{2}+bc}+\sqrt{b^{2}+ac}+\sqrt{c^{2}+ab}\leq \frac{3}{2}\left ( a+b+c \right )$
Cho a,b,c không đồng thời bằng 0,cmr:
Started By hungmind, 02-10-2013 - 19:07
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
0 members, 1 guests, 0 anonymous users