यदि ${I_n} = \int_{0}^{\pi /4} {\tan^n x} \,dx$ है,तो $\lim_{n \to \infty} n[{I_n} + {I_{n - 2}}]$ का मान ज्ञात कीजिए।

  • A
    $1/2$
  • B
    $1$
  • C
    $\infty$
  • D
    $0$

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