If we want to evaluate this at negative one, capital F prime at negative one is equal to f prime of negative one times g of negative one plus function f evaluated at negative one times the derivative of g evaluated at negative one. Now let's see if we can figure these things out. Do they tell us this anywhere? Can we figure this out, f prime of negative one? Well, they tell us right over here, f prime of negative one is equal to five. This is equal to five. Now, let's actually stick with f. What is f of negative one?