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f: R to R is a function defined by f(x) ...

`f: R to R` is a function defined by `f(x) =(e^(|x|) -e^(-x))/(e^(x) + e^(-x))`. Then f is:

A

one-one and onto

B

one-one but not onto

C

onto but not one-one

D

neither one-one nor onto

Text Solution

Verified by Experts

The correct Answer is:
D
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