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If f(x)=(x-1)/(x+1) then f(2x) is equal ...

If `f(x)=(x-1)/(x+1)` then `f(2x)` is equal to

A

`(1+f(x))/(3+f(x))`

B

`(1+3f(x))/(3+f(x))`

C

`(3+f(x))/(1+f(x))`

D

`(1+3f(x))/(3-f(x))`

Text Solution

Verified by Experts

The correct Answer is:
B
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