How to evaluate the right hand limit at an asymptote

The video tutorial discusses rational functions, focusing on discontinuities and asymptotes. It explains how to identify limits from the right and the behavior of asymptotes. The instructor emphasizes the importance of understanding basic graphs without relying on calculators and provides tips for graphing functions accurately. The tutorial also covers analyzing limit behavior from both right and left-hand perspectives, concluding with a recommendation to review basic graphing skills.

How would the left-hand limit differ from the right-hand limit in this scenario?

Why is it recommended to review basic graphs instead of relying solely on calculators?