Re: how to have a blind factorization of a polinomial?
- To: mathgroup at smc.vnet.net
- Subject: [mg54081] Re: how to have a blind factorization of a polinomial?
- From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
- Date: Thu, 10 Feb 2005 02:46:14 -0500 (EST)
- Organization: Uni Leipzig
- References: <cud789$2t3$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi, Sqrt[x + y] /. a_ + x :> x*(a/x + 1) ?? Regards Jens "foice" <NONfoiceSPAMMARE at tiscalinet.it> schrieb im Newsbeitrag news:cud789$2t3$1 at smc.vnet.net... > i'd like to have a "froced" or "blind" factorization of an expression so > pass > > from > Sqrt[x+y] > > to > Sqrt[x(1+x/y)] > > and similar. > This kind of operation is very usefull when you need to judge the relative > wight of > various term in a polinomial in order to make wise approximations into > algebra > manipulations of your physical problem. > > But how can I get such very simple algebric operation into Mathematica? > > Thanks > Roberto > > ------------------------------------------------------------- > tutto ciò che ho scritto è sempre In My Humble Opinion (IMHO) > probabilmente l'ho scritto di fretta, quindi scusate se sono stato > sbrigativo. >