Answer and explanation

Correct answer: A.

  1. Step 1: Use the product rule with and . . **Answer: . Why not the others:** The other forms lose a term of the product rule or add a wrong factor.

Practise more Calculus: Limits, Derivatives and Integrals.

Free questions with an explanation for every one, and full timed Panhellenic Examinations (Greece) mock tests.