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Question

Find the intervals in which f (x) = 2 log (x - 2) - x2 + 4x + 1 is increasing or decreasing


A

increasing on (2, 6) decreasing on (6, ∞)

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B

increasing on ( - ∞, 3) decreasing on (3, ∞)

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C

increasing on (2, 3) decreasing on (3, ∞)

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D

increasing on (2, 8) decreasing on (8, ∞)

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Solution

The correct option is C

increasing on (2, 3) decreasing on (3, ∞)



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