Suppose that f(@) = 1 if x > 0. Does lim,-+0 f (@) exist? (Draw a picture.) O No, because the limits from the left and right are unequal O Yes, because the limit from the left equals f(0) O No, because the limit from the right does not existSuppose that f (@) = life 1; and that f(0) = 0. Assume that f (x) isn't defined on (-1, 0) U (0, 1). lim,-+0 f() does not exist -- why? (Draw a picture!) Of(x) isn't defined in an interval around 0 O f(x) is defined at 0 The limits as x->0 from the left and right are not equal