So this might look messy, but all we have to do now is think about, well, what is the derivative of u of x? What is the derivative of v of x? And we should just be able to substitute those things back into this expression we just wrote down. So let's do that. So the derivative with respect to x of u of x, of u of x, is equal to, let's see, five minus three x, the derivative of five is zero. The derivative of negative three x, well, that's just gonna be negative three. That's just negative three.