# Find three positive real numbers whose sum is 28 and whose product is a maximum.

• Apr 15th 2010, 05:53 PM
ewkimchi
Find 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 PM
pickslides
Here's a start

$x+y+z=28$

$(xyz)' = 0$

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