First derivative test of rational function

The video tutorial covers the concept of continuity in functions, focusing on asymptotes and their implications on local maxima and minima. The instructor explains the preference for using the product rule over the quotient rule to avoid mistakes. The process of finding derivatives and identifying critical values is detailed, with emphasis on understanding when a function is undefined. The tutorial concludes with testing intervals to determine increasing and decreasing behavior, and identifying extrema, while highlighting common mistakes.

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