WAEC Further Mathematics 2023 Objective — Question 25
Question 25 of 40 from the West African Examinations Council (WAEC) Further Mathematics 2023 Objective paper, with the correct answer and a full explanation.
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Given that f(x)=x^2+3x+1, find the value of x at the turning point.
- A. 2
- B. 1 1/2
- C. -1 1/2Correct
- D. -2
Explanation
At the turning point f'(x)=0. f'(x)=2x+3=0 => x=-3/2=-1 1/2.
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