Actually, let's just do that. So over here, the derivative of this, so right now, we have a positive. The slope of our tangent line is getting less and less positive. It hits zero right over there. So the derivative might look something like this over that interval. Now, the slope of the tangent line is getting more and more and more and more negative, right, until about that point. So it's getting more and more and more negative until about that point.