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The complete set of values of x in the domain of function f(x) = _ x+2 x ([x]^2 - 5[x] + 7) (where [ ] denote greatest integer function and denote fraction part function) is :

Options

  1. A(- 1 3 , 0 ) ( 1 3 , 1 ) (2, )
  2. B(0, 1) (1, )
  3. C(- 2 3 , 0 ) ( 1 3 , 1 ) (1, )
  4. D(- 1 3 , 0 ) ( 1 3 , 1 ) (1, )

Correct answer

D. (- 1 3 , 0 ) ( 1 3 , 1 ) (1, )

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