JAMB Mathematics 2007 Objective — Question 37
Question 37 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2007 Objective paper, with the correct answer and a full explanation.
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If y=(1+x)^2, find dy/dx.
- A. cos x + x
- B. 1+2x
- C. 2x-1
- D. 2+2xCorrect
Explanation
Let u=1+x. y=u^2, dy/du=2u. dy/dx = 2u x 1 = 2(1+x) = 2+2x.
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