So you could have also said that g of h of x is equal to x. So g of h of x is equal to x. And then they give us some information. The following table lists a few values of g, h, and g prime. Alright, so they want us to evaluate h prime of three. They don't even give us h prime of three, how do we figure it out? They gave us g prime and h and g. How do we figure this out?