- Thread starter
- #1
Albert
Well-known member
- Jan 25, 2013
- 1,225
x>1,y>1 and z>1
prove :$\dfrac {x^4}{(y-1)^2}+\dfrac {y^4}{(z-1)^2}+\dfrac
{z^4}{(x-1)^2}\geq 48$
prove :$\dfrac {x^4}{(y-1)^2}+\dfrac {y^4}{(z-1)^2}+\dfrac
{z^4}{(x-1)^2}\geq 48$