But let's say you wanna take the derivative with respect to x of one over two x to the negative five. Sorry, one over two x minus five, I should say. Well, here, you could immediately, you could apply the quotient rule here, or the numerator you view that as f of x. You could view this as the same thing as the derivative with respect to x instead of two x minus five. Let me do that in the blue color. Two x minus five to the negative one power. And now this, in this situation, you would use a combination of the power rule and the chain rule.