Well this is just going to be zero. You could just evaluate when x is equal to one here, this is going to be equal to zero. And so notice, you get a different limit for this definition of derivative as we approach from the left-hand side or the right-hand side. And that makes sense. This graph is going to look something like, we have a slope of one, so it's going to look something like this. And then right when x is equal to one and the value of our function is zero, it looks something like this. It looks something like this.