Answer :

3a + 2b = 15

a=1 è b=6

a=3 è b=3

a=5 è b=0

R = {(1, 6), (3, 3), (5, 0)}

= {(6, 1), (3, 3), (0, 5)}

The domain of R is the set of first co-ordinates of R

Dom(R) = {1, 3, 5}

The range of R is the set of second co-ordinates of R

Range(R) = {6, 3, 0}

The domain of is the set of first co-ordinates of

Dom() = {6, 3, 0}

The range of is the set of second co-ordinates of

Range() = {1, 3, 5}

Thus,

dom (R) = range (R^{–1})

range (R) = dom (R^{–1})

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