f of 3.5 seems to be right over here. f of 3.9 seems to be right over here. f of 3.999, we're getting closer and closer to our function equaling negative five. So this, the limit as we approach four from below, this one-sided limit from the left, we could say, this is going to be equal to negative five. And if we were to ask ourselves the limit of f of x as x approaches four from the right, from values larger than four, x approaches four from the right, well, same exercise. f of five gets us here. f of 4.5 seems right around here.