And so this is going to be, this is going to be the negative of negative two, or positive two. So it's two plus two, and that makes sense. That what we have in magenta here is two, and what we have over here is two. There's a symmetry here. There is a symmetry here. And so you add them all together, and you get our integral is going to be equal to four. And once again, just as a reality check, you could say, look, the height here is two, the width, the base here is two.