Answer and explanation

Correct answer: B.

  1. Step 1: The numerator is the derivative of the denominator, so . Step 2. Since , the answer is . **Answer: . Why not the others:** is the integral of , counts the factor twice, and is not an antiderivative of the integrand.

Practise more Integration Techniques, Differential Equations and Probability.

Free questions with an explanation for every one, and full timed Singapore GCE A-Level mock tests.