4 f ' -4 X -2 2 4 -2 (i) Identify the critical numbers of f. (Enter your answers as a comma-separated list.) X = 0, 1 X (ii) Identify the open interval(s) on which f is increasing or decreasing. (Enter your answer using interval notation.) increasing (-00,0), (1,00) X decreasing (0,1) X (iii) Determine whether f has a relative maximum, a relative minimum, or neither at each critical number. (Enter your answers as a comma-separated list.) relative minimum X 1 X relative maximum X = 0 X