If f(x)=x3−3xf(x) = x^3 - 3xf(x)=x3−3x, what is the range of fff on [−2,2][-2, 2][−2,2]?
[−2,2][-2, 2][−2,2]
[−18,18][-18, 18][−18,18]
[−2,18][-2, 18][−2,18]
No range