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Black Book Advanced Problems in MathematicsMathematicsFunctions

Range of the function, f(x) = (1+x+x^2)(1+x^4) x^3 , for x > 0 is :

Options

  1. A[0, )
  2. B[2, )
  3. C[4, )
  4. D[6, )

Correct answer

D. [6, )

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