-
gmatusa2010
- Master | Next Rank: 500 Posts
- Posts: 134
- Joined: Sun Jul 25, 2010 5:22 am
- Thanked: 1 times
- Followed by:2 members
How do you evaluate absolute value when there's no value? (All variables) I keep seeing it pop up in MGMAT materials, but they way OA solves them is making massive charts. I don't think this is efficient, can somebody chime in on how they handle this? I'll throw out a couple of examples. Also, are there signals as to when what kinds of numbers are best to test if it comes down to it?
1) |X-Y|>|X+Y|
2) |X-Y|>|Y-X|
3) |X-Y|> |X|
4) |X-Y|>|X|/|Y|
(These are totally made up, although the have appear in pieces peppered in MGMAT, the actually problem does not require solving them, they were mere red herring.)
I usually do number line method but can that be done with all variables?
1) |X-Y|>|X+Y|
2) |X-Y|>|Y-X|
3) |X-Y|> |X|
4) |X-Y|>|X|/|Y|
(These are totally made up, although the have appear in pieces peppered in MGMAT, the actually problem does not require solving them, they were mere red herring.)
I usually do number line method but can that be done with all variables?
