So instead of writing g of x there, I could write cosine of x. And one way to visualize this is I'm putting my x into g of x first. So x goes into the function g, and it outputs g of x. And then we're gonna take that output, g of x, and then input it into f of x, or input it into the function f, I should say. We input into the function f, and that is going to output f of whatever the input was, and the input is g of x, g of x. So now with that review out of the way, let's see if we can go the other way around. Let's see if we can look at some type of a function definition and say, hey, can we express that as a composition of other functions?