So if you're trying to find g prime of three, well, that's just going to be f prime of three times h of three plus f of three times h prime of three. And lucky for us, they give us what all of these things evaluate to. f prime of three, right over here, they tell us. f prime, when x is equal to three, is equal to six. So this right over here is six. H of three, they give us that too. H of three, when x is three, the value of our function is zero.