Math Chapter Wise Sets, Relations And Functions English MCQ UPPSC Ashram Paddhati 2021 Q.The function f: R→ → →R defined by f(x) = cosx ∀ ∀ x∈R is Aone-one, but not onto Bonto, but not one-one Cboth one-one and onto Dneither one-one nor onto Show answer Correct answer: neither one-one nor onto