Q80. What is the domain of the function f(x) = 4cos(4x)?Mathematics — NUST Mock By Dogers 5 — Question 80 of 200A. R (the set of all real numbers)B. [-4, 4]C. R - {x | x = (2n+1)π/8, for any integer n}D. R - {x | x = nπ/2, for any integer n}Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →