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If f: R S , defined by f(x)= x- 3 x+1 , is onto, then the interval of S is

Options

  1. A[0,3]
  2. B[-1,1]
  3. C[0,1]
  4. D[-1,3]

Correct answer

D. [-1,3]

Step-by-step solution

-2 x- 3 x 2 -1 x- 3 x+1 3 range of f(x) is [-1,3] . Hence S is [-1,3]

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