Re: isi 2004

Posted by deepak on Apr 17, 2012; 9:39am
URL: http://discussion-forum.276.s1.nabble.com/isi-2004-tp7471464p7472980.html

I believe Vasudha is right.

This represents the equation of a strictly increasing function (first order : 2[(x-a)^2+(x-b)^2+(x-c)^2] - always positive)

Also, the second order condition shows that the function has an inflection point at (a+b+c)/3. So it has 1 real root.