And then let's think about the second part. They say there's no point c in that interval for which f prime of c is equal to the average rate of change. Explain why the statement does not contradict the mean value theorem. So the mean value theorem, just as a little bit of a review, as a little bit of review, it says that if we have some type of an interval, if you have an interval, so let me draw some axes right over here. If you have an interval, so let me draw an interval like this. And over that interval, you have a differentiable function. You have a differentiable function.