Q. 213.5( 2 Votes )

Mark the correct alternative in each of the following:

Let f : R R be a function defined by Then,

A. f is a bijection

B. f is an injection only

C. f is surjection on only

D. f is neither an injection nor a surjection

Answer :

Given that f: R R is a function defined as



Here, e|x| is always positive whether x is negative or positive. So, we will get same values of f(x) for different values of x.


Hence, it is not one-one and onto.


f is neither an injection nor a surjection

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