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Let `f` be a real valued function defined by `f(x)=(e^x-e^(-|x|))/(e^x+e^(|x|))` , then the range of `f(x)` is: (a)R (b) `[0,1]` (c) `[0,1)` (d) `[0,1/2)`

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RESONANCE DPP ENGLISH-RELATIONS AND FUNCTIONS XII-All Questions
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