यदि $f(x) = \begin{cases} x^3 \sin \left(\frac{1}{x}\right), & x \neq 0 \\ 0, & x=0 \end{cases}$ है,तो

  • A
    $f^{\prime \prime}(0) = 1$
  • B
    $f^{\prime \prime}\left(\frac{2}{\pi}\right) = \frac{24-\pi^2}{2 \pi}$
  • C
    $f^{\prime \prime}\left(\frac{2}{\pi}\right) = \frac{12-\pi^2}{2 \pi}$
  • D
    $f^{\prime \prime}(0) = 0$

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