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WAEC Further Mathematics 2017 Question 26

Question 26

Differentiation

Differentiate (5x3 + x2)/x, x ≠ 0 with respect to x

  1. A.10x + 1
  2. B.10x + 2
  3. C.x(15x + 1)
  4. D.x(15x + 2)
Show the answer and explanation

Answer: A (10x + 1)

Explanation

Simplify first: 5x² + x, whose derivative is 10x + 1.