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JAMB Mathematics 2017 Objective — Question 34

Question 34 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2017 Objective paper, with the correct answer and a full explanation.

Find the value of x for which the function f(x) = 3x² - x - 6 is minimum.

A. A. -1/6
B. B. 1/6Correct
C. C. -73/12
D. D. 73/12

Explanation

f'(x)=6x-1=0, so x=1/6.

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