Let f: Rrarr R be a positive, increasing...

Let `f: Rrarr R` be a positive, increasing function with `lim_(xrarroo)(f(3x))/(f(x) )=1 `Then `lim_(xrarroo)(f(2x))/(f(x))` is equal to

A

3

B

1

C

`2/3`

D

`3/2`

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The correct Answer is:

B

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