Well, on the left-hand side, the derivative with respect to x of g of x, we can write that as g prime of x is going to be equal to, well, the derivative of this first, what we have right here written in green, this is going to be, we're just going to apply the power rule. We're going to take our exponent, multiply it by our coefficient out front. Actually, let me write that out. So that's going to be, let me finish this equal sign. That is going to be two times negative three, times x, and now we're going to decrement this exponent. You have to be very careful here because sometimes your brain might say, okay, one less than three is two, so maybe this is x to the negative two. But remember, you're going down.