So let me write that down. The limit of f of x as x approaches eight, because these two things are not the same value, this does not exist. Let's do one more example, and here they're actually asking us a question. The function f is graphed below. What appears to be the value of the one-sided limit, the limit of f of x, this is f of x, as x approaches negative two from the negative direction? So this is the negative two from the negative direction. So we care what happens as x approaches negative two.