જો $3 f(x)-2 f\left(\frac{1}{x}\right)=x$ હોય,તો $f^{\prime}(2)$ શું થાય?

  • A
    $\frac{7}{2}$
  • B
    $\frac{1}{2}$
  • C
    $\frac{2}{7}$
  • D
    $2$

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