Use the graph of f' to identify the critical numbers of f, identify the open interval (s) on which fis increasing or decreasing, and determine whether fhas a relative maximum, a relative minimum, or neither at each critical number. (If an answer does not exist, enter DNE.) (a) (i) Identify the critical numbers of f. (Enter your answers as a comma-separated list.) 2 X (i Identify the open interval(s) on which fis increasing or decreasing. (Enter your answer using interval notation.) (2, oo) increasing (-oo, 2) decreasing X (ii Determine whether fhass a relative maximum, a relative minimum, or neither at each critical number. (Enter your answers as a comma-separated list.) relative minimum X relative maximum 2 X (Ь () Identify the critical numbers of f. (Enter your answers as a comma-separated list.) x = X (ii) Identify the open interval(s) on which fis increasing or decreasing. (Enter your answer using interval notation.) increasing X decreasing X (iii Determine whether fhas a relative maximum, a relative minimum, or neither at each critical number. (Enter your answers as a comma-separated list.) relative minimum х 3 relative maximum х 3 X (c) (i) Identify the critical numbers of f. (Enter your answers as a comma-separated list.) X = X (ii) Identify the open interval(s) on which fis increasing or decreasing. (Enter your answer using interval notation.) increasing X decreasing X (iii) Determine whether fhas a relative maximum, a relative minimum, or neither at each critical number. (Enter your answers as a comma-separated list.) relative minimum х 3 X relative maximum X