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Let (f(x+y)-f(x))/(2)=(f(y)-1)/(2)+xy, f...

Let `(f(x+y)-f(x))/(2)=(f(y)-1)/(2)+xy`, for all `x,yinR,f(x)` is differentiable and `f'(0)=1.` Domain of `log(f(x)),` is

A

`R^(+)`

B

`R-{0}`

C

`R`

D

`R^(-)`

Text Solution

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The correct Answer is:
C
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