જો $\int(3t^2 \sin \frac{1}{t} - t \cos \frac{1}{t}) dt = f(t) \sin(\frac{1}{t}) + c$ હોય,તો $f(2) =$ શોધો.

  • A
    $2$
  • B
    $-12$
  • C
    $8$
  • D
    $-16$

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