Register    Login    Search    Rss Feeds

Forums Home » Ask An Instructor » GMAT Math » GMAT Prep Math


 Page 1 of 1 [ 3 posts ] 



  Print view Print view Previous topic Previous topic | Next topic Next topic
 

DS: Is x^4 + y^4 > z^4 ?

Author Message
Saurav
 Post subject: DS: Is x^4 + y^4 > z^4 ?
 Post Posted: Sat Oct 18, 2008 1:43 pm 
Is x^4 + y^4 > z^4 ?

1. x^2 + y^2 > z^2

2. x + y > z
Top 
divya
 Post subject:
 Post Posted: Mon Oct 20, 2008 3:37 pm 
http://www.manhattangmat.com/forums/is- ... t4655.html
Top 
RonPurewal
 Post subject:
 Post Posted: Fri Nov 07, 2008 4:59 am 
Offline
ManhattanGMAT Staff


Posts: 7146
heh heh, that problem.

let me say the following:

this problem should serve as a nice wake-up call to any and all students who don't like "plug-in methods", or who abjure such methods so that they can keep searching ... and searching ... and searching for the elusive "textbook" method.
this problem is pretty much ONLY soluble with plug-in methods. therefore, you MUST make plug-in methods part of your arsenal if you want a fighting chance at all quant problems you'll see.

this is the case for a great many difficult inequality problems, by the way: the most difficult among those problems will often require some sort of plug-ins, or, at the very least, they will be hell on earth if you try to use theory.
Top 
Display posts from previous:  Sort by  
 
 Page 1 of 1 [ 3 posts ] 





Who is online

Users browsing this forum: No registered users and 1 guest

 
 

 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron