Difference between revisions of "2017 USAMO Problems/Problem 6"
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given that <math>a,b,c,d,</math> are nonnegative real numbers such that <math>a+b+c+d=4</math>. | given that <math>a,b,c,d,</math> are nonnegative real numbers such that <math>a+b+c+d=4</math>. | ||
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==Solution== | ==Solution== | ||
Revision as of 01:55, 14 June 2017
Problem
Find the minimum possible value of
![\[\frac{a}{b^3+4}+\frac{b}{c^3+4}+\frac{c}{d^3+4}+\frac{d}{a^3+4},\]](http://latex.artofproblemsolving.com/9/5/3/9530f2f6673410cf7229b9d8416c0a5c296467ae.png)
given that 
are nonnegative real numbers such that 
.
