$\int \frac{2 x^3-1}{x^4+x} \,d x$ का मान (जहाँ $C$ समाकलन का एक स्थिरांक है) किसके बराबर है?

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

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