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. And so we just have to evaluate that at 4 and at 1. And sometimes the notation we'll use is, we'll say that the antiderivative is x to the third over 3, and we're going to evaluate it, the one I always like to just write the numbers up here, at 4 and from that subtract it, evaluate it at 1. Sometimes you'll see people write a little line here too, where they'll say we're going to evaluate it at 4 and then at 1, but I'll just do it without the line.