And what we're curious about is what is the derivative of this with respect to x? What is dy dx, which we could also write as y prime? Well, there's a couple of ways to think about it. 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.