$\log_e x - \log_e (x - 1) = $

  • A
    $\frac{1}{x} - \frac{1}{2x^2} + \frac{1}{3x^3} - \dots \infty $
  • B
    $\frac{1}{x} + \frac{1}{2x^2} + \frac{1}{3x^3} + \dots \infty $
  • C
    $2 \left( \frac{1}{x} + \frac{1}{3x^3} + \frac{1}{5x^5} + \dots \infty \right)$
  • D
    $2 \left( \frac{1}{x} - \frac{1}{3x^3} + \frac{1}{5x^5} - \dots \infty \right)$

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