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AP EAMCET202022 Sep 2020Morning ShiftMathematicsFunctionsActual

For equality of functions f and g . . . . (i) domain of f= domain of g (ii) f(x)=g(x) (iii) x domain of f

Options

  1. ABoth (i) and (ii) necessary
  2. BBoth (ii) and (iii) are necessary
  3. CBoth (i) and (iii) are necessary
  4. DAll of the above

Correct answer

D. All of the above

Step-by-step solution

For equality of functions f and g it is necessary that (i) domains of f= domain of g (ii) f(x)=g(x) and (iii) x domain of f . So, all are necessary.

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