Answer and explanation

Correct answer: C. 49

  1. Step 1: . Step 2. . Answer: 49. Why not the others: 57: That is , not the derivative. 37: That differentiates the term as instead of . 19: That does not multiply by the powers when differentiating.

Practise more Limits, differentiation and integration.

Free questions with an explanation for every one, and full timed Tawjihi (Palestinian General Secondary Examination), Scientific Stream mock tests.