Q55. What is the derivative of cot-1((2x)/(1 - x2)) with respect to x?Mathematics — NUST Mock 7 — Question 55 of 200A. 1/(1 - x2)B. 1/(1 + x2)C. 2/(1 + x2)D. -2/(1 + x2)Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →