Let R be the relation 1 2 1 3 2 3 2 4 3 1 and let S be the r

Let R be the relation {(1, 2), (1, 3), (2, 3), (2, 4), (3, 1)}, and let S be the relation {(2, 1), (3, 1), (3, 2), (4, 2)}. Find S R. Discrete Math Question

Solution

Answer :

Let R be the relation such that R = {(1, 2), (1, 3), (2, 3), (2, 4), (3, 1)}, and

S be the relation such that S = {(2, 1), (3, 1), (3, 2), (4, 2)}.

Then S o R = { (2, 1), (3, 1), (3, 2), (4, 2)} o {(1, 2), (1, 3), (2, 3), (2, 4), (3, 1)}

                  = { ( 1 , 1) , ( 1 , 2 ) ,( 2 , 1 ) , ( 2 , 2 ) }