Q4. If f(x) = 3/(x − 1) for x ≠ 1, then for what value(s) of x is f(f(x)) undefined?Mathematics — Sets, Functions and Groups — Question 4 of 232A. 1, 4B. 1, 2C. 1D. 4Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →