Re: Transformations in expressions
- To: mathgroup at smc.vnet.net
- Subject: [mg91917] Re: Transformations in expressions
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 12 Sep 2008 05:30:40 -0400 (EDT)
- Organization: Uni Leipzig
- References: <gaar3o$16q$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi, Log[x^2 + y^3]/Sin[x^2 + y^3] /. x^2 + y^3 -> z ?? Regards Jens Miguel wrote: > Hi all, > How can I to transform a specific expression to other by substitution > of a part of it. > > For example, I want to transform the expression Log[x^2+y^3]/ > Sin[x^2+y^3] in Log[z]/Sin[z] by substitution x^2+y^3 --> z. > > And other question: Is the new expression dependent of z. I see it is, > but how can I to programar it. > > Thanks >