मान लीजिए $f: R \to R$ एक धनात्मक वर्धमान फलन है जहाँ $\lim_{x \to \infty} \frac{f(3x)}{f(x)} = 1$ है। तो $\lim_{x \to \infty} \frac{f(2x)}{f(x)} = $ ज्ञात कीजिए।

  • A
    $2/3$
  • B
    $3/2$
  • C
    $3$
  • D
    $1$

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