The derivative of f/ of a function is continuous and has two zeros. Selected values of f/ are given in the table below. If the domain of f is the set of all real numbers, then f is decreasing and increasing on which interval(s)? X -4 -3 -2 -1 ƒ¹ (x) 3 4 5 O Increasing: (-4, −1) U (2, 6) Decreasing: (-1,2) O Increasing: (3, 0) U (0, 1) Decreasing:(-1, 2) O Increasing: (-4, −1) U (2,6) Decreasing: (1, 2) O Increasing: (-4, −1) U (−1, 6) Decreasing:(-1,2) 0 0 1 2 3 456 -3-20432 1

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