1.Relation and Function
easy

$g :\{5,6,7,8\} \rightarrow\{1,2,3,4\},$ $g=\{(5,4),(6,3),(7,4),(8,2)\}$ વિધેયનાં પ્રતિવિધેય મળી શકશે ? કારણ સહિત નિર્ણય કરો

Option A
Option B
Option C
Option D

Solution

$g :\{5,6,7,8\} \rightarrow\{1,2,3,4\}$ defined as

$g =\{(5,4),(6,3),(7,4),(8,2)\}$

From the given definition of $g$, it is seen that $g$ is a many one function as $g(5)=g(7)=4$

$\therefore g$ is not one – one.

Hence, function $g$ does not have an inverse.

Standard 12
Mathematics

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