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Black Book Advanced Problems in MathematicsMathematicsFunctions

Which of the following is not an odd function ?

Options

  1. A( x^4 + x^2 + 1 (x^2 + x + 1)^2 )
  2. Bsgn ( sgn (x))
  3. C( x)
  4. Df(x) , where f(x) + f ( 1 x ) = f(x) f ( 1 x ) x R - 0 and f(2) = 33

Correct answer

D. f(x) , where f(x) + f ( 1 x ) = f(x) f ( 1 x ) x R - 0 and f(2) = 33

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