JAMB Mathematics 2010 Objective — Question 40
Question 40 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2010 Objective paper, with the correct answer and a full explanation.
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40. y=(2x+1)^3, find dy/dx. A. 6(2x+1)^2 B. 3(2x+1)^2-1 C. 6(2x+1) D. 3(2x+1)
- A. 6(2x+1)^2Correct
- B. 3(2x+1)^2-1
- C. 6(2x+1)
- D. 3(2x+1)
Explanation
dy/dx = 3(2x+1)^(3-1) x 2 = 6(2x+1)^2.
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