So the only critical number in the interval is x equals 2. Now we just have to test f at the different endpoints and at the critical number and see which of those is the highest. We're going to test f of 1, which is equal to 8 times the natural log of 1 minus 1 squared. We'll test f of 4, which is equal to 8 times the natural log of 4 minus 4 squared, which is, of course, 16. And we're going to test f of 2. So these are the endpoints, and this is a critical number, 8 times the natural log of 2 minus minus 2 squared. Now which of these is going to be the largest?