What happens when x is slightly larger? When I write this notation, I want to be careful. I mean really just right below 0. When x is right above 0, what happens? Let's say x was 0.01, or 0.1, positive 0.1. It's going to be the same thing, because in both cases we're squaring and we're taking the 4th, so you're kind of losing your sign information. If x is 0.1, this thing is going to be a small positive number.