And we're done. In the next video, we'll think about whether this actually makes sense. Let's do one more example just to show it doesn't have to necessarily apply to only these kind of positive integers. We could have a scenario where maybe we have h of x. h of x is equal to x to the negative 100 power. The power rule tells us that h prime of x would be equal to what? Well, n is negative 100. So it's negative 100x to the negative 100 minus 1, which is equal to negative 100x to the negative 101.