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Gaokao Math Practice Question

6. 设 $f(x)$ 为奇函数, 且当 $x \geq 0$ 时, $f(x)=e^{x}-1$, 则当 $x<0$ 时, $f(x)=$

  1. A.$e^{-x}-1$
  2. B.$\mathrm{e}^{-x}+1$
  3. C.$-\mathrm{e}^{-x}-1$
  4. D.$-\mathrm{e}^{-x}+1$

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