What we have to do now is to see whether the second derivative changes signs around these points in order to be able to label them inflection points. What happens when x is slightly below 0? Let's take the situation, let's do all the scenarios. What happens when x is slightly below 0? Not all of them necessarily, but if x is like 0.1, what is the second derivative going to be doing? If x is minus 0.1, this term right here is going to be positive, and then this is going to be 81 minus 0.1 to the 4th. That's going to be a very small number.