Hey guys, i'm having some problems answering the last question of my assignment....so hopefully you can help

8. Test the relation R for the properties of reflexivity, symmetry, antisymmetry and transitivity if R is on the set of positive integers, and is given by (x,y)eR if x<=2y

*that "e" is supposed to be the, "in the set" character.

Hope to hear from you soon,
Thanx in advance