સંકલન $\int \frac{2x^3 - 1}{x^4 + x} \,dx$ ની કિંમત શું થાય? (અહીં $C$ એ સંકલનનો અચળાંક છે)

  • A
    $\frac{1}{2} \log_e \frac{|x^3 + 1|}{x^2} + C$
  • B
    $\frac{1}{2} \log_e \frac{|x^3 + 1|^2}{|x^3|} + C$
  • C
    $\log_e \left| \frac{x^3 + 1}{x} \right| + C$
  • D
    $\log_e \frac{|x^3 + 1|}{x^2} + C$

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