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RELATIONS AND FUNCTIONS — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsRELATIONS AND FUNCTIONS1 Mark
MCQ
Let $f : R \rightarrow R$ be a function defined by $\text{f(x)}=\frac{\text{e}^{|\text{x}|}-\text{e}^{-\text{x}}}{\text{e}^\text{x}+\text{e}^{-\text{x}}}$ then $f(x)$ is:
  • A
    One$-$one onto.
  • B
    One$-$one but not onto.
  • C
    Onto but not one$-$one.
  • ✓
    None of these.
✓

Answer

Correct option: D.
None of these.

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