Choose the correct answer from the given four options. Let f : R … - Vidyadip

MCQ

Choose the correct answer from the given four options.
Let f : R → R be defined by $\text{f}(\text{x})=\frac{1}{\text{x}}\ \forall\ \text{x}\in\text{R}.$ Then f is:

A
one-one.
B
onto.
C
bijective.
✓
f is not defined.

✓

Answer

Correct option: D.

f is not defined.

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

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

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

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