# Domains Were Never This Tough!!!

**Algebra**Level 4

A function f is non-negative and defined on an appropriate subset of Real Numbers . If

\({ x }^{ 2 }f\left( x \right) \quad +\quad f(1-x)\quad =\quad 2x-{ x }^{ 4 }\)

is true for all x on the domain , then find largest interval of values of x as [a,b]

What is The Value of [100(a+b)]

[x] represents the greatest integer function