Let A= {1, 2, 3} and B= {1, 2, 3, 4},
Define a binary relation R from A to B as follows:
R= {(a, b) belongs to AxB| ab}
Then
a) Find R as a set of ordered pairs.
b) Find domain and range of R.
c) Draw the directed graph of R.

AB= (1,1), (1,2) ,(1,3), (1,4), (2,1), (2,2), (2,3), (2,4), (3,1), (3,2), (3,3), (3,4)
R= (2,1), (3,1), (3,2)

Question

Let A= {1, 2, 3} and B= {1, 2, 3, 4}, 
Define a binary relation R from A to B as follows:     
R= {(a, b) belongs to AxB| a>b}
Then
a)	Find R as a set of ordered pairs.
b)	Find domain and range of R. 
c)	Draw the directed graph of R.

AB= (1,1), (1,2) ,(1,3), (1,4), (2,1), (2,2), (2,3), (2,4), (3,1), (3,2), (3,3), (3,4)
R= (2,1), (3,1), (3,2)

anonymous · Answer

is that rite or not and what is the domain and range tell me

mathmate · Answer

Just a little detail: the braces are needed to show that it's a set:
AxB= {(1,1), (1,2) ,(1,3), (1,4), (2,1), (2,2), (2,3), (2,4), (3,1), (3,2), (3,3), (3,4)}
R is correct.