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Let f:Rrarr R be a function defined by,...

Let `f:Rrarr R ` be a function defined by,` f(x)`=`(e^|x|-e^-x)/(e^x+e^-x` then

A

one-one and onto

B

one-one but not onto

C

onto but not one-one

D

neither onto nor one-one

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The correct Answer is:
D
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