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Posted by jeremy1997 on 21-08-2014 - 16:51
Max, min?? $P=\frac{x+y}{2+z}+\frac{y+z}{2+x}+\frac{x+z}{2+y}$
với x,y,z thuộc [1;2]
Posted by jeremy1997 on 20-08-2014 - 22:42
Tìm min, max: $P = \frac{x+y}{2+z}+\frac{y+z}{2+x}+\frac{z+x}{2+y}$
Posted by jeremy1997 on 19-07-2014 - 22:37
$P= 4(a+b+c)^{2} + 3(\frac{1}{a}+\frac{1}{b}+\frac{1}{c})$. Tìm min. a,b,c là số thực dương