The first question of assignment 3 was a fairly easy one luckily. Each member in our group was able to complete the weekly question pretty effectively. We decided to prove:
Ve P R+; Wd P R+; Vx;y P R+; |x - y| >d =>|x + y| >e
The proof was fairly simple. |x - y| is always equal to or less than |x + y|, meaning that the later is always greater than d. Using that clue it was a fairly easy question to work out.
