माना सभी $x > 0$ के लिए, $f(x) = \lim_{n \rightarrow \infty} n(x^{1/n} - 1)$, तो

  • A
    $f(x) + f(\frac{1}{x}) = 1$
  • B
    $f(xy) = f(x) + f(y)$
  • C
    $f(xy) = xf(y) + yf(x)$
  • D
    $f(xy) = xf(x) + yf(y)$

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