1.

Let f(x)=log_(e)(x+ sqrt(x^(2)+1)), domain of f is where f(x) is defined for real values of x, If f is bijective then f^(-1)(x) exists The inverse of f is positive on

Answer»

`(0, OO)`
`(-oo, oo)`
`[0, E]`
`(-oo, 0)`

ANSWER :A


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