Target Exam

CUET

Subject

Section B1

Chapter

Relations and Functions

Question:

If $f : R \to R$ be defined by $f(x) = \frac{1}{x}, \forall x \in R$. Then, $f$ is

Options:

one-one

onto

bijective

$f$ is not defined

Correct Answer:

$f$ is not defined

Explanation:

The correct answer is Option (4) → $f$ is not defined ##

Given that, $f(x) = \frac{1}{x}, \forall x \in R$

For $x = 0$, $f(x)$ is not defined.

Hence, $f(x)$ is a not defined function.