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Black Book Advanced Problems in MathematicsMathematicsFunctions

The function f : (- , 3] (0, e^7] defined by f(x) = e^ x^3 - 3x^2 - 9x + 2 is :

Options

  1. AMany-one and onto
  2. BMany-one and into
  3. COne to one and onto
  4. DOne to one and into

Correct answer

A. Many-one and onto

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