First Derivative, Increasing, Decreasing, and extrema (3.3 (p187) #11, 15, 17, 27, 35The first derivative can find relative extremes when it changes from negative to positive (min) or positive to negative (max). Here are 5 quick examples: #11 - 0:00 #15 - 2:11 #17 - 3:28 #27 - 6:00 #35 - 8:08