Re: sqrt(x^2) = x
- To: mathgroup at smc.vnet.net
- Subject: [mg61201] Re: sqrt(x^2) = x
- From: Bill Rowe <readnewsciv at earthlink.net>
- Date: Wed, 12 Oct 2005 01:43:16 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
On 10/11/05 at 3:22 AM, pacoga at ctv.es (Francisco Javier) wrote: >How can I tell Mathematica that I want to simplify all expressions >like Sqrt[x^2] as x, whithout taking into account that x is or not >a positive real number? PowerExpand will do what you want, i.e., In[20]:= PowerExpand[Sqrt[x^2]] Out[20]= x This tranformation is not included amoung the tranformations applied by Simplify or FullSimplify since it is not valid for all possible values of x. -- To reply via email subtract one hundred and four