From the table and the graph of f (a parabola) shown in Figure 1 we see that when x is close to 2 (on either side of 2). F(x) is close to 4. In fact, it appear that we can make the values of f(x) as close as we like to 4 by taking x sufficiently close 2. We express this by saying “the limit of the function f(x) = ……. As x approaches 2 is equal to 4. “The notation for this is