मान लीजिए $g(x)$,$f(x)$ का एक प्रतिअवकलज (antiderivative) है। तो $\ln(1 + (g(x))^2)$ किसका प्रतिअवकलज है?

  • A
    $\frac{2f(x)g(x)}{1 + (f(x))^2}$
  • B
    $\frac{2f(x)g(x)}{1 + (g(x))^2}$
  • C
    $\frac{2f(x)}{1 + (f(x))^2}$
  • D
    कोई नहीं

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