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2.Relations and Functions
easy
The Fig shows a relation between the sets $P$ and $Q$. Write this relation
in roster form
What is its domain and range ?
Option A
Option B
Option C
Option D
Solution
It is obvious that the relation $R$ is $" x$ is the square of $y''$
In roster form, $R=\{(9,3),(9,-3),(4,2),(4,-2),(25,5),(25,-5)\}$
The domain of this relation is $\{4,9,25\} .$
The range of this relation is $\{-2,2,-3,3,-5,5\}$
Note that the element $1$ is not related to any element in set $P$.
The set $Q$ is the codomain of this relation.
Standard 11
Mathematics
