Evaluate the general limit of a rational function

The video tutorial explores the concept of limits, particularly when approaching undefined values or asymptotes. It discusses the use of graphing calculators to analyze limits and determine if they approach infinity, negative infinity, or do not exist. The tutorial emphasizes checking the graph's behavior from both directions to confirm the limit's nature.

What does it mean for a graph to approach from the left and right in the context of limits?

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Describe the significance of confirming that a limit does not exist using a graph.

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