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JAMB Mathematics 2010 Question 44

Question 44

Integration

Find ∫(sin x + 2)dx.

  1. A.cos x + x2 + k
  2. B.cos x + 2x + k
  3. C.−cos x + 2x + k
  4. D.−cos x + x2 + k
Show the answer and explanation

Answer: C (−cos x + 2x + k)

Explanation

∫sin x dx = −cos x and ∫2 dx = 2x, so the answer is −cos x + 2x + k.