# Inequality ..

• January 31st 2010, 10:05 AM
Perelman
Inequality ..
Hi ,

x , y and z real numbers positive , with $x+y+z=4$ . prove That :

http://img682.imageshack.us/img682/4381/66308853.gif
• January 31st 2010, 02:41 PM
Perelman
Can you help me ??