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# PS: Greatest value for X

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Senior Manager
Joined: 31 Jul 2006
Posts: 440
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Kudos [?]: 15 [0], given: 0

PS: Greatest value for X [#permalink]  30 Oct 2006, 18:22
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0% (00:00) correct 0% (00:00) wrong based on 0 sessions
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Senior Manager
Joined: 28 Aug 2006
Posts: 302
Followers: 10

Kudos [?]: 97 [0], given: 0

3 and 6.

For x^4 + Y^4 =100, x will be max if y is 0.
So x^4=100
ie 3<x<3.5

So it is between 3 and 6
_________________
Senior Manager
Joined: 05 Aug 2005
Posts: 414
Followers: 1

Kudos [?]: 13 [0], given: 0

B.....
Put y=0, this will reduce to X^4=100, which gives x between 3 and 6
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