So that's going to be the same thing as e to the natural log of a, natural log of a, times x power. Times x power. And now we can use the chain rule to evaluate this derivative. So what we will do is we will first take the derivative of the outside function, so e to the natural log of a times x, with respect to the inside function, with respect to natural log of a times x. And so this is going to be equal to e to the natural log of a times x. And then we take the derivative of that inside function with respect to x. Well, natural log of a might not immediately jump out to you but that's just going to be a number.