And you wouldn't even have to use the product rule here. You could simplify this even further. This is the same thing as the derivative with respect to x of, just we have the same base. We can add the exponents. We're taking the product, so it's gonna be x to the negative 3.5. And so you could just use the power rule. So this is going to be equal to, bring the negative 3.5 out front, negative 3.5 x to the, and then we just decrement this by one.