यदि $l^r(x)$,$x$ का $r$-वां पुनरावृत्त लघुगणक (iterated logarithm) दर्शाता है,अर्थात $l^1(x) = \log(x)$,$l^2(x) = \log(\log(x))$,...,$l^r(x) = \log(\log(...\log(x)...))$,तो $\int \frac{1}{x \cdot l^1(x) \cdot l^2(x) \cdot ... \cdot l^r(x)} \, dx = $

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

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