Re: Replacement question

*To*: mathgroup at smc.vnet.net*Subject*: [mg74208] Re: Replacement question*From*: dh <dh at metrohm.ch>*Date*: Wed, 14 Mar 2007 03:52:44 -0500 (EST)*References*: <et5nnh$jhk$1@smc.vnet.net>

Hi Brian, this works, but what is matched is the FullForm and not what you see. Therefore, look at your expression using FullForm. Daniel Brian Beckage wrote: > I apologize for this very basic question. I understand how to use /. > {} to replace a variable with a more complex expression, e.g., x-> > y+z. Can one move in the opposite direction to replace all > occurrences of y+z with x? myExpression/.{y+z->x} does not seem to > work. > > Thank you for your help, > Brian > > >