Find the smallest possible value of

in terms of the constant k, given that xy=k, and x>y>1.

Oskar:

I think you are off track.

1) The problem requires x> y > 1

2) I think you have modified the function by adding
 (k-2k^2)/(x^2 - y^2).  But this is not a constant, so I think you are now minimizing the wrong function.

Posted by Steve Herman on 2007-03-27 13:56:02