જો $f(x)=x^{\tan x}+(\tan x)^{x}$ હોય, તો $f^{\prime}\left(\frac{\pi}{4}\right)=$

  • A
    $1+\frac{\pi}{2} \log \left(\frac{e \pi}{4}\right)$
  • B
    $\frac{\pi}{2}\left(\log \frac{\pi}{4}+1\right)$
  • C
    $1$
  • D
    $0$

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