E N D
Example 3Evaluate SolutionConsider the graph of y= cot x below. As x > 0 gets closer and closer to 0, the values of cot x get larger and larger. Equivalently, the graph of y = cot x, for x > 0, has the upper y-axis as a vertical asymptote. Thus Observe that, as in Example 2, the two-sided limit does not exist.