Answer and explanation

Correct answer: B.

**Answer: . Why not the others:** assumes the coefficient 5 has no effect; evaluates ; inverts the coefficient.
  1. Step 1: Rewrite , so the limit is .
  2. Step 2: We know , and . Thus the limit is .

Practise more Differential and Integral Calculus, Differential Equations, and Probability.

Free questions with an explanation for every one, and full timed CESS & Examen d'entrée (Belgium) mock tests.