Q55. What is the domain of the function f(x) = 4cos(4x)?Mathematics — NUST Mock By Dogers 2 — Question 55 of 200A. ℝ (all real numbers)B. ℝ - {π/2}C. ℝ - {(2n+1)π/2 | n ∈ ℤ}D. [-4, 4]Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →