And then we're going to have a 0 in the denominator. And that's not defined. We don't know what happens when you divide. Or we've never defined what happens when you divide by 0. So they say what value should be assigned to f of negative 2 to make f of x continuous at that point? So to think about that, let's try to actually simplify f of x. So f of x, I'll just rewrite it, is equal to.