If `A={2,\ 3,\ 4}` , `B={1,\ 3,\ 7}` and `R={(x ,\ y): x in A ,\ y in B\ a n d\ x

Answer

`R={(2,3),(2,7),(3,7),(4,7)}`


`{R}^{-1}={(3,2),(7,2),(7,3),(7,4)}`

Explanation

Now, R is defined from A to B, where A is domain/ input set

And B is codomain/output set



So` R^(-1) `can be simply defined as B to A

Where roles of A and B are replaced from input to output and vice-versa.

Most simple method for finding R is by checking each pair.



In this case `R^(-1)` can also be defined as xRy : x>y


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