And those are pretty obvious. We hit a maximum point right over here, right at the beginning of our interval. Looks like when x is equal to 0, this is the absolute maximum point for the interval. And the absolute minimum point for the interval happens at the other end point. So if this is a, this is b, the absolute minimum point is f of b. And the absolute maximum point is f of a. And it looks like a is equal to 0.