Extremas of a Constrained Inequality!
Algebra
Level
5
\[\large{ \dfrac{x^4 + y^4 + z^4}{(x+y+z)^4} }\]
Let the minimum and maximum values of the above expression be \({\alpha}\) and \({\beta},\) respectively, satisfying the following conditions:
- \(x,y,z \in \mathbb R^+\)
- \((x+y+z)^3 = 32xyz.\)
Suppose \({\alpha}\) can be represented as \(\dfrac{A - B \sqrt{C}}{D},\) and \({\beta}\) as \(\dfrac{E}{F},\) for positive integers \(A,B,C,D,E,F\) and with \(C\) having no square factors.
Then find the minimum value of \(A+B+C+D+E+F\).
by
Satyajit Mohanty