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 Post subject: equation with multiple absolute valuesPosted: Thu, 8 Sep 2011 09:32:41 UTC

Joined: Tue, 6 Sep 2011 20:10:11 UTC
Posts: 5
|x|+|7-x|+2|x-2|=4
and the way of solving please, cuz i have no idea

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 Post subject: Re: equation with multiple absolute valuesPosted: Thu, 8 Sep 2011 09:53:56 UTC
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Joined: Mon, 23 Feb 2009 23:20:33 UTC
Posts: 1049
Are you sure this is the problem statement? Because there is no solution for x.

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 Post subject: Re: equation with multiple absolute valuesPosted: Thu, 8 Sep 2011 11:08:54 UTC

Joined: Tue, 6 Sep 2011 20:10:11 UTC
Posts: 5
aswoods wrote:
Are you sure this is the problem statement? Because there is no solution for x.

yes ,this is it, and you are right , is no solution for x , but how to prove it ???step by step if you could,... i've stuck

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 Post subject: Re: equation with multiple absolute valuesPosted: Thu, 8 Sep 2011 13:56:02 UTC
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deathmate wrote:
|x|+|7-x|+2|x-2|=4
and the way of solving please, cuz i have no idea

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 Post subject: Re: equation with multiple absolute valuesPosted: Thu, 8 Sep 2011 19:12:29 UTC
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Joined: Wed, 30 Mar 2005 04:25:14 UTC
Posts: 12098
Location: Austin, TX
outermeasure wrote:
deathmate wrote:
|x|+|7-x|+2|x-2|=4
and the way of solving please, cuz i have no idea

And the triangle inequality proves once again that it is king among inequalities.

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 Post subject: Re: equation with multiple absolute valuesPosted: Sat, 10 Sep 2011 05:50:35 UTC
 Member of the 'S.O.S. Math' Hall of Fame

Joined: Wed, 21 May 2003 04:27:18 UTC
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outermeasure wrote:
deathmate wrote:
|x|+|7-x|+2|x-2|=4
and the way of solving please, cuz i have no idea

And the triangle inequality proves once again that it is king among inequalities.

LOL! Indeed, mathematical illiteracy triumphs again!

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"Mathematicians are like lovers. Grant a mathematician the least principle, and he will draw from it a consequence which you must also grant him, and from this consequence another." Bernard Le Bovier Fontenelle (1657-1757)

"In great mathematics there is a very high degree of unexpectedness, combined with inevitability and economy."
G.H. Hardy (1877-1947)

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