This isn't a straightforward expression here, but you might notice that I have something being raised to the third power. In fact, if we look at the outside of this expression, we have some business in here as being raised to the third power. And so one way to tackle this is to apply the chain rule. So if we apply the chain rule, it's gonna be the derivative of the outside with respect to the inside, or the something to the third power, the derivative of the something to the third power with respect to that something. So it's going to be three times that something squared times the derivative with respect to x of that something. In this case, the something is sine, let me write that in a blue color, it is sine of x squared. It is sine of x squared.