Let f:R rarr R be a function defined by f(x)=(e^(|x|)-e^(-x))/(e^(x)+e – InterviewSolution

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1.	Let f:R rarr R be a function defined by f(x)=(e^(\|x\|)-e^(-x))/(e^(x)+e^(-x)) then :
Answer» F is both ONE - one and ONTO f is one - one but not onto f is onto but not one - one f is NEITHER one - one nor onto Answer :D

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