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kramacha1979
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Posts: 68
Joined: Thu Jan 22, 2009 3:05 pm
 

X^4 +

by kramacha1979 Tue Jun 09, 2009 10:15 am

IS X^4 + Y^4 > Z^4

1) X^2 + Y^2 > Z^2
2) X + Y > Z

Help needed on this one.. I tried plugging some numbers and killed BD..

OA : E
RonPurewal
Students
 
Posts: 19744
Joined: Tue Aug 14, 2007 8:23 am
 

Re: X^4 +

by RonPurewal Mon Jun 15, 2009 10:47 pm

huge thread on this problem here:

is-x-4-y-4-z-4-t4655.html