Now, this all might have been a little bit confusing, but we should now have the payoff. We now have the payoff. We have all of the interesting things going on. We know that at x is equal to 1, let me write it over here. We figured out at x is equal to 1, the slope is 0. So f prime prime is, sorry, let me write it this way. I should have said, we know that the slope is 0.