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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 difined at x = 0. The value which should be assigned to f at x = 0, so that it is continuous at x = 0, is

A

a-b

B

a+b=0

C

`log_e(ab)`

D

none of these

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