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Black Book Advanced Problems in MathematicsMathematicsFunctions

Let A = [a, ) denotes domain, then f: [a, ) -> B, f(x) = 2x^3 - 3x^2 + 6 will have an inverse for the smallest real value of a, if :

Options

  1. Aa = 1, B = [5, )
  2. Ba = 2, B = [10, )
  3. Ca = 0, B = [6, )
  4. Da = -1, B = [1, )

Correct answer

A. a = 1, B = [5, )

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