$\int {{e^{3\log x}}{{({x^4} + 1)}^{ - 1}}\,dx} = $

  • A
    $\log ({x^4} + 1) + c$
  • B
    $\frac{1}{4}\log ({x^4} + 1) + c$
  • C
    $ - \log ({x^4} + 1) + c$
  • D
    इनमें से कोई नहीं

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