WAEC Further Mathematics 2019 Question 30

Question 30

Integration

Evaluate ∫09 √x dx.

  1. A.3
  2. B.9
  3. C.18
  4. D.27
Show the answer and explanation

Answer: C (18)

Explanation

∫√x dx = (2/3)x^(3/2); from 0 to 9: (2/3)(27) = 18.