$\int \frac{e^x}{(1 + e^x)(2 + e^x)} dx = $

  • A
    $\log \left[ (1 + e^x)(2 + e^x) \right] + c$
  • B
    $\log \left( \frac{1 + e^x}{2 + e^x} \right) + c$
  • C
    $\log \left[ (1 + e^x)\sqrt{2 + e^x} \right] + c$
  • D
    $\text{इनमें से कोई नहीं}$

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