1.Relation and Function
easy

कारण सहित बतलाइए कि क्या निम्नलिखित फलनों के प्रतिलोम हैं:

$f:\{1,2,3,4\} \rightarrow\{10\}$ जहाँ

$f=\{(1,10),(2,10),(3,10),(4,10)\}$

Option A
Option B
Option C
Option D

Solution

$f :\{1,2,3,4\} \rightarrow\{10\}$ defined as $f =\{(1,10),(2,10),(3,10),(4,10)\}$

From the given definition of $f$, we can see that $f$ is a many one function as

$f(1)=f(2)=f(3)=f(4)=10$

$\therefore f$ is not one – one.

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

Standard 12
Mathematics

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