So one way, if you want to keep your bounds of integration, or if you want to keep this a definite integral, I guess you could say, you would change your bounds from u is equal to something to u is equal to something else. And so your bounds of integration, let's see, when x is equal to one, what is u? Well, when x is equal to one, you have one squared plus one, so you have two. U is equal to two in that situation. When x is equal to two, what is u? Well, you have two squared, which is four, plus one, which is five. So u is equal to five.