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

  • A
    $\tan(x e^x) + c$
  • B
    $\sec(x e^x) \tan(x e^x) + c$
  • C
    $-\tan(x e^x) + c$
  • D
    આમાંથી કોઈ નહીં

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

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