|
|
|
|
|
| Author |
Message |
![[Post New]](/templates/default/images/icon_minipost_new.gif) 12 Jan 2008 19:11:18 IST
|
|
|
divide numerator and denominator by x^n and y^n .
the expression will be 1/ ( x^n + 1/x^n) ( y^n + 1/y^n)
now, minimum value of x^n + 1/ x^n is 2 [ Using AM-GM inequality]
the maximum value of the expression will be when denominator is the minimum .
so the answer is 1/4
|
this reply: 5 points
(with 1 
in 1 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
|
|
|
|
|
|
|
Moderation Team
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
