The function f(x)=x2+1x2+2f(x) = \frac{x^2+1}{x^2+2}f(x)=x2+2x2+1 has which range?
[0,0.5)[0, 0.5)[0,0.5)
[0.5,1)[0.5, 1)[0.5,1)
[0,1][0, 1][0,1]
[1,2][1, 2][1,2]