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If the function f(x)=(2x-sin^(-1)x)/(2x+...

If the function `f(x)=(2x-sin^(-1)x)/(2x+tan^(-1)x)` is continuous at each point of its domain, then the value of `f(0)` (A) `4/3` (B) `1/3` (C) `-1/3` (D) `2/3`

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