And let's see if we can find any candidate inflection points. And remember, candidate inflection points are where the second derivative equals 0. Now if the second derivative equals 0, that doesn't tell us that those are definitely inflection points. Let me make this very clear. If x is inflection, then the second derivative at x is going to be equal to 0. Because you're having a change in the concavity, I always say con-ca-ti-vity, but it's the con-cavity. You have a change in the slope goes from either increasing to decreasing or from decreasing to increasing.