The first derivative test is making a “sign diagram” via number line with the increasing/decreasing sketches to determine the nature of the extrema’s: relative if (-)->(+) or (+)->(-) no extrema if (-)->(-) or (+)->(+) Relative Extrema, Local Maximum and Minimum, First Derivative Test, Critical Points (cr: Organic Chemistry Tutor) First Derivative Test (cr: The Organic … Continue reading 4.3- The First Derivative Test