Ma8cHedirasmire Ma8cHedirasmire 24-11-2016 Mathematics contestada By applying the Product Rule twice, one can prove that if f, g, and h are differentiable, then (fgh)′=f′gh+fg′h+fgh′. Now, in the above result, letting f=g=h yields ddx[f(x)]3=3[f(x)]2f′(x). Use this last formula to differentiate y=e3x.