And so once again, this is equal to four. And since the left and right-handed limits are approaching the same thing, we would say that this limit exists, and it is equal to four. Now let's do this next example, as x approaches one. Well, we'll do the exact same exercise. And once again, if you look at the individual limits for f of x from the left and the right, as we approach one, this limit doesn't exist, but the limit as x approaches one of the sum might exist. So let's try that out. So the limit as x approaches one from the left-hand side of f of x plus g of x, what is that going to be equal to?