એક વિધેય $f(x)$ એ કોઈ વાસ્તવિક સંખ્યા $c$ $(c > 1)$ અને $\forall\, x > 0$ માટે $f(x) = f(\frac{c}{x})$ નું પાલન કરે છે. જો $\int_{1}^{\sqrt{c}} \frac{f(x)}{x} dx = 3$ હોય,તો $\int_{1}^{c} \frac{f(x)}{x} dx$ ની કિંમત શોધો.

  • A
    $0$
  • B
    $3$
  • C
    $-3$
  • D
    $6$

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