You can imagine when x is a million, you're going to have a million squared plus 1. The value of the denominator is going to be dictated by this x squared term. So this is going to be approximately equal to x over the square root of x squared. This term right over here, the 1, isn't going to matter so much when we get very, very, very large x's. And this right over here, x over the square root of x squared, or x over the principal root of x squared, this is going to be equal to x over. If I square something and then take the principal root, remember the principal root is the positive square root of something, then I'm essentially taking the absolute value of x. It's going to be equal to x over the absolute value of x for x approaches infinity or for x approaches negative infinity.