For f(x)=sin(ax)−axx3f(x) = \frac{\sin(ax) - ax}{x^3}f(x)=x3sin(ax)−ax, what is f(0)f(0)f(0) for continuity?
000
−a3/6-a^3/6−a3/6
a3/6a^3/6a3/6
a/6a/6a/6