A

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Q. Let f : ( - 1, 1 ) → B be a function defined by f ( x ) = 2 1 x 1 2x tan - - , then f is both one-one and onto when B is the interval

  • (A) (0,π/2)
  • (B) (0,(-π)/2)
  • (C) (π/2,(-π)/2)
  • (D) ((-π)/2,π/2)

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