But what I wanna do in this video is literally leverage the chain rule to take the derivative implicitly so that I don't have to explicitly define y as a function of x either way. And the way we do that is literally just apply the derivative operator to both sides of this equation and then apply what we know about the chain rule. Because we are not explicitly defining y as a function of x and explicitly getting y is equal to f prime of x, they call this, which is really just an application of the chain rule, we call it implicit differentiation. Implicit differentiation. And what I want you to keep in the back of your mind the entire time is that it's just an application of the chain rule. So let's apply the derivative operator to both sides of this. So it's the derivative with respect to x of x squared plus y squared, x squared plus y squared on the left-hand side of our equation, and then that's going to be equal to the derivative with respect to x on the right-hand side.