$\int \frac{d x}{2 e^{2 x}+3 e^x+1}=$

  • A
    $x+\log \left(e^x+1\right)-2 \log \left(2 e^x+1\right)+c,$ जहाँ $c$ समाकलन स्थिरांक है
  • B
    $x-\log \left(e^x+1\right)+4 \log \left(e^x+1\right)+c,$ जहाँ $c$ समाकलन स्थिरांक है
  • C
    $x+\log \left(e^x+1\right)-4 \log \left(2 e^x+1\right)+c,$ जहाँ $c$ समाकलन स्थिरांक है
  • D
    $x-\log \left(e^x+1\right)+2 \log \left(2 e^x+1\right)+c,$ जहाँ $c$ समाकलन स्थिरांक है

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