FIGURE N2–1
However, [x] does have a limit at every nonintegral real number. For example,
EXAMPLE 2
Suppose the function y = f (x), graphed in Figure N2–2, is defined as follows:
Determine whether limits of f, if any, exist at
(a) x = −2,
(b) x = 0,
(c) x = 2,
(d) x = 4.