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RELATIONS AND FUNCTIONS — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsRELATIONS AND FUNCTIONS2 Marks
Question
$F = \{(a, 2), (b, 1), (c, 1)\}.$
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Answer

$\mathrm{F}: \mathrm{S} \rightarrow \mathrm{T}$ is defined as:
$\mathrm{F}=\{(\mathrm{a}, 2),(\mathrm{b}, 1),(\mathrm{c}, 1)\}$
Since $F(b)=F(c)=1, F$ is not one-one.
Hence, $F$ is not invertible i.e., $\mathrm{F}^{-1}$ does not exist.

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