JAMB Mathematics 2020 Objective — Question 23
Question 23 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2020 Objective paper, with the correct answer and a full explanation.
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The minimum of the function f(x)=2x^2-12x+5 is
- A. 59
- B. -59
- C. 13
- D. -13Correct
Explanation
dy/dx=4x-12=0, x=3. y(min)=2(9)-36+5=-13.
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