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Let f: R rarr R be a positive increasi...

Let `f: R rarr R` be a positive increasing function with `underset(xrarrinfty)lim(f(3x))/(f(x))=1, then underset(xrarrinfty)lim(f(2x))/(f(x))`=

A

1

B

`2/3`

C

`3/2`

D

3

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