Post-UTME Mathematics 2019 Objective — Question 1
Question 1 of 50 from the Post-UTME Screening (Post-UTME) Mathematics 2019 Objective paper, with the correct answer and a full explanation.
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The turning point of the curve y = 5 - 8x - 2x^2 occurs at
- A. (-2, 13)Correct
- B. (2, 13)
- C. (2, -13)
- D. (-2, -13)
Explanation
dy/dx = -8 - 4x = 0, so x = -2. y = 5-8(-2)-2(-2)^2 = 5+16-8 = 13. Turning point (-2,13).
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