function it's gonna be undefined that obviously kinks right but if you thought if you think of basically here some heuristic way to smooth any heuristic way you can think of to smooth out that kink then the second derivative is going to be related to the slope parameters on one side and the soul parameters on the other side with yeah exactly and the bandwidth of this movie that's the epsilon that was in that in that formula there's a there there details that we could you know we could talk about the brain yes