You could say it's a critical point, and so step two is correct. In order to make this conclusion, you would have to test what the derivative is doing before that point and after that point, and verify that it is switching sides. And we could try to do that. So let's make a little table here. Make a little table, a little bit neater. So x, x, h prime of x right over here. We know at x equals two, h prime of two is zero, that's our critical point.