Math

CalculusQ&A LibraryThe graph of a function g is shown in the figure. Use it to state the values (if they EXAMPLE 7 exist) of the following: lim g(x) (b) x 2+ lim g(x) (c) im g(x) X » 2 (a) X »2- 3 lim g(x) lim g(x) (f) m_g(x). X »5 (d) (e) 2 SOLUTION From the graph we see that the values of g(x) approach Xas x 1 approaches 2 from the left, but they approach 1 as x approaches 2 from the right. -2 2 4 Therefore Video Example (b) m g(x) = x 2+ (a) m g(x) and 1 = (c) Since the left and right limits are different, we conclude that the limit as x approaches 2 of g(x) does not exist. The graph also shows that (e) m g(x) = (d) m g(x) and X x » 5+ x » 5- (f) This time, the left and right limits are the same and so, by this theorem, we have lim g(x) X »5 X = Despite this fact, notice that g(5)2Question

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