What we're going to do in this video is try to find the derivative with respect to x of x squared sine of x, all of that to the third power. And what's going to be interesting is that there's multiple ways to tackle it, and I encourage you to pause the video and see if you can work through it on your own. So there's actually multiple techniques. One path is to do the chain rule first. So I'll just say CR for chain rule first. And so I have, I'm taking the derivative with respect to x of something to the third power. So if I take the derivative, it would be the derivative with respect to that something, so that would be three times that something squared times the derivative with respect to x of that something, where the something in this case is x squared sine of x, x squared sine of x.