Let \(a,b,c,d\) be positive real numbers such that \(a+b+c+d=4\).

What is the minimum value of

\[ \frac { 1 }{ { a }^{ 2 }+1 } +\frac { 1 }{ { b }^{ 2 }+1 } +\frac { 1 }{ { c }^{ 2 }+1 } + \frac { 1 }{ { d }^{ 2 }+1 } ?\]

×

Problem Loading...

Note Loading...

Set Loading...