Find three positive real numbers whose sum is 28 and whose product is a maximum.List them in ascending order., ,

- Apr 15th 2010, 05:53 PMewkimchiFind three positive real numbers whose sum is 28 and whose product is a maximum.
Find three positive real numbers whose sum is 28 and whose product is a maximum.

**List them in ascending order.**, , - Apr 15th 2010, 06:16 PMpickslides
Here's a start

$\displaystyle x+y+z=28 $

$\displaystyle (xyz)' = 0$

$\displaystyle x,y,z \in \mathbb{R}^+$