જો ${I_n} = \frac{d^n}{dx^n}(x^n \log x)$ હોય,તો ${I_n} - n{I_{n - 1}} = $

  • A
    $n$
  • B
    $n - 1$
  • C
    $n!$
  • D
    $(n - 1)!$

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