Right over here, our derivative would be zero. So our derivative would intersect the x-axis there, and then it just looks like it is, the slope is getting more and more and more negative. So our derivative is gonna get more and more and more negative. Well, what I very roughly just sketched out looks an awful lot like the brown graph right over here. So this brown graph does indeed look like the derivative of this blue graph. So what I would say is that this is actually f, and then this would be f prime, and then if this is f prime, the derivative of that is going to be f prime prime. So that looks good.