यदि $f(x) = \sin \left(\cosh \left(\frac{x^2+1}{x^2+2}\right)\right)$ है, तो $f^{\prime}(1) = $

  • A
    $\frac{2}{9} \sinh \left(\frac{2}{3}\right) \cos \left(\cosh \left(\frac{2}{3}\right)\right)$
  • B
    $\sinh \left(\frac{2}{3}\right) \cos \left(\cosh \left(\frac{2}{3}\right)\right)$
  • C
    $\frac{2}{9} \cos \left(\cosh \left(\frac{2}{3}\right)\right)$
  • D
    $\frac{2}{9} \cosh \left(\frac{2}{3}\right) \cos \left(\sinh \left(\frac{2}{3}\right)\right)$

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