ExpandAll Problem with Rules

*To*: mathgroup at smc.vnet.net*Subject*: [mg50431] ExpandAll Problem with Rules*From*: "David Park" <djmp at earthlink.net>*Date*: Fri, 3 Sep 2004 03:35:30 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

The ExpandAll Help says... ExpandAll[expr] expands out all products and integer powers in any part of expr. The following works... a(b + c) == d(e + f) // ExpandAll a b + a c == d e + d f The following appears to work, but gives a strange error message. a(b + c) -> d(e + f) // ExpandAll General::argt: ExpandAll called with 0 arguments; 1 or 2 arguments are \ expected a b + a c -> d e + d f David Park djmp at earthlink.net http://home.earthlink.net/~djmp/