Let x, y be real numbers such that x<= y+c for every c>0. Then x<=y. Prove this by contradiction....
Thank you very much Sir..
but I could not understand one point here:
"since x > y we have x - y > 0. Choose c > 0 such that c < x - y (this is of course possible, c = (x - y)/2 is an example)."..
How could you say that c < x - y....example is not very clear!