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If R is a binary relation on a set A, de...

If R is a binary relation on a set A, define `R^(-1)` on A.
Let `R={(a,b):a,b inW" and "3a+2b=15}` where W is the set of whole numbers.
Express R and `R^(-1)` as sets of ordered pairs.
Show that (i) dom (R)=range `(R^(-1))` (ii) range (R)=dom`(R^(-1)).`

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