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AP EAMCET20227 Jul 2022Evening ShiftMathematicsFunctionsActual

If f is a relation from set of positive real number to the set of positive real numbers defined by f(x)=3 x^2-2 , then f is

Options

  1. Aone-one but not onto
  2. Bonto but not one-one
  3. Ca bijection
  4. Dnot a function

Correct answer

D. not a function

Step-by-step solution

(w) f: R_ + R_ + f(x)=3 x^2-2 As aligned & x (0, ) & 3 x^2-2 (-2, ) aligned But co-domain of f is R_ + . Hence, f is not a function.

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