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JEE Main201911 Jan 2019Evening ShiftMathematicsFunctionsActual

Let a function f:(0, ) (0, ) be defined by f(x)= |1- 1 x | . Then f is :

Options

  1. Anot injective but it is surjective
  2. Binjective only
  3. Cneither injective nor surjective
  4. DNone of the above

Correct answer

D. None of the above

Step-by-step solution

f:(0, ) (0, )f(x)= |1- 1 x | is not a function f(1)=0 and 1 domain but 0 co-domain Hence, f(x) is not a function.

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