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The function f(x)=(log(1+ax)-log(1-bx))/...

The function `f(x)=(log(1+ax)-log(1-bx))/x` is not defined at `x=0`. The value which should be assigned to f at x=0 so that it is continuous at x=0 is

A

`log a+log b`

B

`0`

C

`a-b`

D

`a+b`

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The correct Answer is:
D
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