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MathGroup Archive 1996

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Re: Help with this!!!! please

  • To: mathgroup at smc.vnet.net
  • Subject: [mg4241] Re: [mg4139] Help with this!!!! please
  • From: leszek (Leszek Sczaniecki)
  • Date: Sun, 23 Jun 1996 03:06:07 -0400
  • Organization: Wolfram Research, Inc.
  • Sender: owner-wri-mathgroup at wolfram.com

> 
> On Fri, 7 Jun 1996, Erick Houli Katz wrote:
> 
> > How can I solve this exercise???
> > 
> > |1-2X|+|3X+1|=2
> > 
> > Thanks for any help.
> > 
> > Erick.
> > 
> > P.S.: Please don't forget to give me all the theory you use to solve it.
> > Thanks again.
> > 
> > 
> > 
> 
> 

I suggest to use this simple trick.

In[1]:= Solve[Sqrt[(1-2 x)^2] + Sqrt[(3 x + 1)^2] == 2, x]

                 2
Out[1]= {{x -> -(-)}, {x -> 0}}
                 5


-Leszekk

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