Consider the following. 3- y 2- -2 -1 5 Use the graph to sketch the graph of f'. y 2- y 2- -2 -1 2 4 5 6 -2 -1 2 3 4 5 -1- -1- O OFind the following intervals. For each of these intervals, describe the corresponding behavior of f. (Enter your intervals from smallest starting value to largest starting value. Enter NONE in any unusec answer blanks.) (a) The intervals on which f '(x) is positive. ? v , 7 VU? v 7 v f is ~-Se|ect- v (b) The intervals on which f '(X) is negative. ? v '2 v U 7 v (a v f is --Se|ect v (c) The intervals on which f ' is increasing. 7 v ? v U 7 v ? v f is ~-Select- v (d) The intervals on which f ' is decreasing. ? v ? v U ? v ? v f is ---Select v