And then if we really want to solve for the derivative of y with respect to x, we can just divide both sides by two y. We just divide both sides by two y. And we are left with the derivative of y with respect to x. Let's scroll down a little bit. The derivative of y with respect to x is equal to, is equal to, well, the twos cancel out. We are left with negative x, negative x over, over y. So this is interesting.