And so that it becomes completely clear so that the derivative of this thing is sitting around here. We could put a negative four over here. But you can't just willy nilly throw a negative four there. You would have to put a negative 1 4th outside of it in order for it to be, in order negative 1 4th times negative four, you're just multiplying by one, which doesn't change the value. And then here you'd clearly see, here you'd clearly see that this is, this right over here is the derivative of e to the negative four x. So you'd have e to the negative four x. The antiderivative of this is e to the negative four x, and then you have this negative 1 4th over here.