So let's start doing some implicit differentiation. So we're going to take the derivative of both sides of this relationship or this equation, depending on how you want to view it. And so let's skip down here, past the orange. So the derivative with respect to x of x squared is going to be 2x. And the derivative with respect to x of something to the third power is going to be 3 times that something squared times the derivative of that something with respect to x. So what's the derivative of this with respect to x? Well, the derivative of y with respect to x is just dy dx.