Math Chapter Wise Sets, Relations And Functions English MCQ DSSSB PGT 2021 Q.The function f: R → → 1 1 –,, 2 2 defined as f(x) = 2 x 1+ x, is - ASurjective but not injective BInjective but not surjective CNeither injective nor surjective DInvertible Show answer Correct answer: Invertible