And if you're in doubt about what we just did, where we're kind of doing the power rule in reverse, now take the power rule, take the derivative of this using the power rule. Negative two times 24 over negative two is just gonna be 24, and then you decrement that exponent, you go to negative three. So are we done here? Is this f of x? Well, f of x might involve a constant. So let's put a constant out here, because notice, if you were to take the derivative of this thing here, the derivative of 24x to the negative two over negative two, we already established is 24x to the negative three. But then if you take the derivative of a constant, well, that just disappears, so you don't see it when you look at the derivative.