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Black Book Advanced Problems in MathematicsMathematicsIndefinite and Definite Integration

f(x) = 2x - ⁻¹ x - (x + 1+x^2 )

Options

  1. Astrictly increases x R
  2. Bstrictly increases only in (0, )
  3. Cstrictly decreases x R
  4. Dstrictly decreases in (0, ) and strictly increases in (- , 0)

Correct answer

A. strictly increases x R

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