This is just an application of the chain rule. We get dy dx is equal to negative 2 x to the negative 2 minus 1, x to the negative 3 power. So that's pretty straightforward. But what I want to see is if we get the same exact result when we differentiate implicitly. So let's apply our derivative operator to both sides of this equation. And so let me make it clear what we're doing. x times the square root of y and 1 right over there.