Well, you might remember from your power rules that if you take the derivative with respect to x of x to the third, you are going to get 3x squared, which is pretty darn close to x squared except for this factor of 3, so let's divide both sides by 3. And you get the derivative of x to the third divided by 3 is indeed x squared, or you could say that this is the same thing as the derivative with respect to x of x to the third over 3. So what is the derivative of this? It will be 3 times 1 third, and then you'll decrement the power, it will just be x squared. So this right over here, once again, is x squared. It's just equal to x squared. So in this case, our capital F of x, our antiderivative, is x to the third over 3.