Let be a real valued function defined by...

Let 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) [0,0.5)

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The correct Answer is:

c

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