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A function is matched below against an interval, where it is supposed to be increasing.

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A function is matched below against an interval, where it is supposed to be increasing. Which of the following pair is incorrectly matched ?

Interval Function
(a) (- ∞, - 4) x3 + 6x2 + 6
(b) (- ∞, 1/3] 3x2 - 2x + 1
(c) [2, ∞) 2x3 - 3x2 - 12x + 6
(d) (- ∞, ∞) x3 - 3x2 + 3x + 3

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1 Answer

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Best answer

Correct Option (b) Interval (- ∞, 1/3] , Function 3x2 - 2x + 1

Explanation:

Since. this is wrong.

Hence, option (b) is the required answer.

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