It is known that the function f (x) is an odd function whose domain of definition is R. when x > 0, f (x) = x-x + 1, then if x

It is known that the function f (x) is an odd function whose domain of definition is R. when x > 0, f (x) = x-x + 1, then if x

x>0,f(x)=x^2-x+1,
X0, f (- x) = x ^ 2 + X + 1, f (x) = - f (- x) = - x ^ 2-x-1, the axis of symmetry is x = - 1 / 2
So x