જો $y = \log_e(\log_e x)$ હોય,જ્યાં $x > 1$,તો $\frac{d^2 y}{dx^2} = $ . . . . . . .

  • A
    $-\frac{x \cdot \log_e x}{\log_e e x}$
  • B
    $\frac{\log_e e x}{x \cdot \log_e x^2}$
  • C
    $-\frac{\log_e e x}{x^2 (\log_e x)^2}$
  • D
    $\frac{\log_e(e/x)}{x \cdot \log_e x^2}$

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