We could define, let's say, a w of x to be equal to x plus one. And so then, let's think about it. W of x, w of u of x, I should say, w of u, let me do the same color, w of u of x is going to be equal to, now my input is no longer x, it's a u of x, so it's going to be a u of x plus one or just sine of x plus one. So that's sine of x plus one. And then if we define a third function, let's say, let's see, I'll call it, let's call it h. I'm running out of variables. Well, there are a lot of letters left. So if I say h of x is just equal to the cosine of whatever I input, so it's equal to the cosine of x, well then h of w of u of x is gonna be g of x.