$\int \sqrt{1 + x^2} \, dx = $

  • A
    $\frac{x}{2}\sqrt{1 + x^2} + \frac{1}{2}\ln|x + \sqrt{1 + x^2}| + C$
  • B
    $\frac{2}{3}(1 + x^2)^{3/2} + C$
  • C
    $\frac{2}{3}x(1 + x^2)^{3/2} + C$
  • D
    $\text{इनमें से कोई नहीं}$

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