That's just the product rule as applied to this part right over here. And all of that, of course, is being multiplied by this up front, which actually, let me just rewrite that. So all of this I could rewrite as, let's see. This would be three times, if I have the product of things raised to the second power, I could take each of them to the second power and then take their product. So x squared squared is x to the fourth, and then sine of x squared is sine squared of x, and then all of that is being multiplied by that. And if we want, we can algebraically simplify, we can distribute everything out, in which case, what would we get? Well, let's see.