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MathGroup Archive 2004

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Re: New user: Abs[] problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg50097] Re: [mg50079] New user: Abs[] problem
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Sun, 15 Aug 2004 03:14:23 -0400 (EDT)
  • Reply-to: hanlonr at cox.net
  • Sender: owner-wri-mathgroup at wolfram.com

eqn=x+1-Abs[2x-4]+Abs[5-x]==0;

FindRoot[eqn,{x,2}]

{x -> 5.}

eqn /. %

True


Bob Hanlon

> 
> From: Edson.Brusque at smc.vnet.net
To: mathgroup at smc.vnet.net
> Date: 2004/08/14 Sat AM 01:50:33 EDT
> To: mathgroup at smc.vnet.net
> Subject: [mg50097] [mg50079] New user: Abs[] problem
> 
> Hello,
> 
>      I'm starting Electrical Engineering and using Mathematica for 
> helping me in Calculus e Algebra studies.
> 
>      I'm trying to solve this equation on Mathematica:
>          x + 1 - |2x - 4| + |5 - x| = 0
> 
>      on the Math* notebook I'm typing:
>          Solve[x + 1 - Abs[2x - 4] + Abs[5 - x] == 0,x]
> 
>      but only got an empty output: {{}}
> 
>      Someone please can help me get Math* to solve this?
> 
>      Thank you very much,
> 
>      Edson Brusque
> 
> 
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> Edson Brusque                     C.I.Tronics Lighting Designers Ltda
> Research and Development                   Blumenau  -  SC  -  Brazil
> http://www.suporte.ind.br/ryan/netiqueta.htm     www.citronics.com.br
> 
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> 
> 
> 
> 


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