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RE: Simplification ?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg38103] RE: [mg38049] Simplification ?
  • From: "Florian Jaccard" <jaccardf at eicn.ch>
  • Date: Tue, 3 Dec 2002 04:31:53 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Yes :

PowerExpand[Sqrt[x^2]]

But : It's dangerous ! You have to be sure that x is real positive !

So you can also do the following :

Simplify[Sqrt[x^2],x>0]

Bonne journée !


Florian Jaccard
professeur de Mathématiques
EICN-HES
Le Locle
e-mail : jaccardf at eicn.ch


-----Message d'origine-----
De : Olivier Durussel [mailto:olivier.durussel at epfl.ch]
Envoyé : jeu., 28. novembre 2002 20:08
À : mathgroup at smc.vnet.net
Objet : [mg38049] Simplification ?


Hi,

Is there a way to force Mathematica to simplify the terms like

Sqrt[x^2]

to give  x ???

Thanks per advance !
___________________________________________________________
Olivier DURUSSEL

Ecole Polytechnique Fédérale de Lausanne
STI-IPR-LCSM
ME-Ecublens
CH-1015 Lausanne
Tél.: +41 21 693 53 17
Fax.:+41 21 693 35 09






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